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dir=\"auto\"\u003e\u003cem\u003eBig Update\u003c/em\u003e: \u003ca href=\"https://sepoliafaucet.com/\" rel=\"nofollow\"\u003eNew Sepolia Faucet Located Here\u003c/a\u003e.\n\\Kovan, Ropsten, and Rinkeby have been deprecated. Goerli Still works but we highly recommend Sepolia as its proof of stake based.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eYou'll need to verify via Twitter to get ETH \u0026amp; LINK.\nYou can find \u003ca href=\"https://docs.chain.link/docs/link-token-contracts/#goerli\" rel=\"nofollow\"\u003eBackup Faucets here\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAdditionally, lesson 7 uses Chainlink VRF v1 instead of v2, \u003ca href=\"https://docs.chain.link/vrf/v1/examples/get-a-random-number\" rel=\"nofollow\"\u003eyou can find the docs for Chainlink VRFv1 here\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://www.youtube.com/watch?v=M576WGiDBdQ\" rel=\"nofollow\"\u003eYouTube Video\u003c/a\u003e\u003c/p\u003e\n\u003cbr\u003e\n\u003cp align=\"center\" dir=\"auto\"\u003e\n\u003ca href=\"https://www.youtube.com/watch?v=M576WGiDBdQ\" rel=\"nofollow\"\u003e\n\u003cimg src=\"/smartcontractkit/full-blockchain-solidity-course-py/raw/main/img/youtube_thumbnail.jpeg\" width=\"350\" alt=\"Solidity, Blockchain, and Smart Contract Course – Beginner to Expert Python Tutorial\" style=\"max-width: 100%;\"\u003e\n\u003c/a\u003e\n\u003c/p\u003e\n\u003cbr\u003e\n\u003cp dir=\"auto\"\u003eWelcome to the repository for the Ultimate Solidity, Blockchain, and Smart Contract - Beginner to Expert Full Course | Python Edition FreeCodeCamp course!\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTable of Contents\u003c/h1\u003e\u003ca id=\"user-content-table-of-contents\" class=\"anchor\" aria-label=\"Permalink: Table of Contents\" href=\"#table-of-contents\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#table-of-contents\"\u003eTable of Contents\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#resources-for-this-course\"\u003eResources For This Course\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#questions\"\u003eQuestions\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#windows-support\"\u003eWindows Support\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#hiccupsissues-from-the-video\"\u003eHiccups/Issues from the Video\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-0-welcome-to-blockchain\"\u003eLesson 0: Welcome To Blockchain\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#what-is-a-blockchain\"\u003eWhat is a Blockchain?\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#making-your-first-transaction\"\u003eMaking Your First Transaction\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#how-do-blockchains-work\"\u003eHow Do Blockchains Work?\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#consensus\"\u003eConsensus\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#the-future\"\u003eThe Future\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#miscellaneous\"\u003eMiscellaneous\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-1-welcome-to-remix-simple-storage\"\u003eLesson 1: Welcome to Remix! Simple Storage\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#everything-in-this-section-can-be-read-about-in-the-solidity-documentation\"\u003eEverything in this section can be read about in the Solidity Documentation\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#remix\"\u003eRemix\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#basic-solidity\"\u003eBasic Solidity\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#deploying-to-a-live-network\"\u003eDeploying to a \"Live\" network\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-2-storage-factory\"\u003eLesson 2: Storage Factory\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#inheritance-factory-pattern-and-interacting-with-external-contracts\"\u003eInheritance, Factory Pattern, and Interacting with External Contracts\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-3-fund-me\"\u003eLesson 3: Fund Me\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#payable-msgsender-msgvalue-units-of-measure\"\u003ePayable, msg.sender, msg.value, Units of Measure\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#chainlink-oracles\"\u003eChainlink Oracles\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#importing-from-npm-and-advanced-solidity\"\u003eImporting from NPM and Advanced Solidity\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-4-web3py-simple-storage\"\u003eLesson 4: Web3.py Simple Storage\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#installing-vscode-python-and-web3\"\u003eInstalling VSCode, Python, and Web3\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#our-first-python-script-with-web3py---deploying-a-contract\"\u003eOur First Python Script with Web3.py - Deploying a Contract\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#interacting-with-our-contract-in-python--web3py\"\u003eInteracting with Our Contract in Python \u0026amp; Web3.py\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-5-brownie-simple-storage\"\u003eLesson 5: Brownie Simple Storage\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#brownie-introduction\"\u003eBrownie Introduction\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#installing-brownie\"\u003eInstalling Brownie\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#brownie-simple-storage-project\"\u003eBrownie Simple Storage Project\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#testing-basics\"\u003eTesting Basics\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#brownie-console\"\u003e[Brownie console]\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-6-brownie-fund-me\"\u003eLesson 6: Brownie Fund Me\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#introduction\"\u003eIntroduction\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#dependencies-deploying-and-networks\"\u003eDependencies, Deploying, and Networks\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#funding-and-withdrawing-python-scripts\"\u003eFunding and Withdrawing Python Scripts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#testing-across-networks\"\u003eTesting across networks\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#git\"\u003eGit\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#compatibility-with-ganache-ui\"\u003eCompatibility with Ganache UI\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-7-smartcontract-lottery\"\u003eLesson 7: SmartContract Lottery\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#introduction-1\"\u003eIntroduction\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lotterysol\"\u003e\u003ccode\u003eLottery.sol\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#testing-lotterysol\"\u003eTesting Lottery.sol\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lotterysol-testnet-deployment\"\u003eLottery.sol Testnet Deployment\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-8-chainlink-mix\"\u003eLesson 8: Chainlink Mix\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#brownie-mixes\"\u003eBrownie Mixes\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-9-erc20s-eips-and-token-standards\"\u003eLesson 9: ERC20s, EIPs, and Token Standards\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-10-defi--aave\"\u003eLesson 10: Defi \u0026amp; Aave\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#defi-intro\"\u003eDefi Intro\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#aave-ui\"\u003eAave UI\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#programmatic-interactions-with-aave\"\u003eProgrammatic Interactions with Aave\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#testing\"\u003eTesting\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-11-nfts\"\u003eLesson 11: NFTs\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#non-technical-explainer\"\u003eNon-Technical Explainer\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#simple-nft\"\u003eSimple NFT\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#simplecollectible-testing\"\u003eSimpleCollectible Testing\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#advanced-nft\"\u003eAdvanced NFT\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#advanced-deploy_and_create\"\u003eAdvanced deploy_and_create\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#creating-metadata--ipfs\"\u003eCreating Metadata \u0026amp; IPFS\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#lesson-12-upgrades\"\u003eLesson 12: Upgrades\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#introduction-to-upgrading-smart-contracts\"\u003eIntroduction to upgrading smart contracts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#upgrades-mix-and-code\"\u003eUpgrades-mix and code\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#testing-upgrades\"\u003eTesting Upgrades\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#upgrades-on-a-testnet\"\u003eUpgrades on a testnet\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#bonus-lesson-13-full-stack-defi\"\u003eBonus Lesson 13: Full Stack Defi\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#defi-stake-yield-brownie-scripts--tests\"\u003eDefi Stake Yield Brownie Scripts \u0026amp; Tests\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#testing-our-defi-stake-yield-brownie-dapp\"\u003eTesting our Defi Stake Yield Brownie Dapp\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#front-end--full-stack\"\u003eFront End / Full Stack\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#closing-and-summary\"\u003eClosing and Summary\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#security\"\u003eSecurity\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#where-do-i-go-now\"\u003eWhere do I go now?\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#learning-more\"\u003eLearning More\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#community\"\u003eCommunity\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#hackathons\"\u003eHackathons\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#vyper\"\u003eVyper\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eResources For This Course\u003c/h1\u003e\u003ca id=\"user-content-resources-for-this-course\" class=\"anchor\" aria-label=\"Permalink: Resources For This Course\" href=\"#resources-for-this-course\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eQuestions\u003c/h3\u003e\u003ca id=\"user-content-questions\" class=\"anchor\" aria-label=\"Permalink: Questions\" href=\"#questions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/smartcontractkit/full-blockchain-solidity-course-py/discussions\"\u003eGithub Discussions\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eAsk questions and chat about the course here!\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.stackexchange.com/\" rel=\"nofollow\"\u003eStack Exchange Ethereum\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eGreat place for asking technical questions about Ethereum\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://stackoverflow.com/\" rel=\"nofollow\"\u003eStackOverflow\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eGreat place for asking technical questions overall\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWindows Support\u003c/h3\u003e\u003ca id=\"user-content-windows-support\" class=\"anchor\" aria-label=\"Permalink: Windows Support\" href=\"#windows-support\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://medium.com/@cromewar/how-to-setup-windows-10-11-for-smart-contract-development-and-brownie-e7d8d13555b3\" rel=\"nofollow\"\u003eSetup your windows environment\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eLearn how to install all the tools you will need for this course on a windows machine\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHiccups/Issues from the Video\u003c/h3\u003e\u003ca id=\"user-content-hiccupsissues-from-the-video\" class=\"anchor\" aria-label=\"Permalink: Hiccups/Issues from the Video\" href=\"#hiccupsissues-from-the-video\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/smartcontractkit/full-blockchain-solidity-course-py/blob/main/chronological-issues-from-video.md\"\u003eChronological Issues from the Video\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eA list of known hiccups/issues you may encounter while implementing the content from the video\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 0: Welcome To Blockchain\u003c/h1\u003e\u003ca id=\"user-content-lesson-0-welcome-to-blockchain\" class=\"anchor\" aria-label=\"Permalink: Lesson 0: Welcome To Blockchain\" href=\"#lesson-0-welcome-to-blockchain\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhat is a Blockchain?\u003c/h2\u003e\u003ca id=\"user-content-what-is-a-blockchain\" class=\"anchor\" aria-label=\"Permalink: What is a Blockchain?\" href=\"#what-is-a-blockchain\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://bitcoin.org/bitcoin.pdf\" rel=\"nofollow\"\u003eBitcoin Whitepaper\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.org/en/whitepaper/\" rel=\"nofollow\"\u003eEthereum Whitepaper\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://blog.chain.link/hybrid-smart-contracts-explained/\" rel=\"nofollow\"\u003eHybrid Smart Contracts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://betterprogramming.pub/what-is-a-blockchain-oracle-f5ccab8dbd72?source=friends_link\u0026amp;sk=d921a38466df8a9176ed8dd767d8c77d\" rel=\"nofollow\"\u003eBlockchain Oracles\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.investopedia.com/terms/b/blockchain.asp\" rel=\"nofollow\"\u003eWhat is a blockchain\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eMaking Your First Transaction\u003c/h2\u003e\u003ca id=\"user-content-making-your-first-transaction\" class=\"anchor\" aria-label=\"Permalink: Making Your First Transaction\" href=\"#making-your-first-transaction\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://metamask.io/\" rel=\"nofollow\"\u003eMetamask\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://etherscan.io/\" rel=\"nofollow\"\u003eEtherscan\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://goerli.etherscan.io/\" rel=\"nofollow\"\u003eGoerli Etherscan\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://kovan.etherscan.io/\" rel=\"nofollow\"\u003eKovan Etherscan\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://faucets.chain.link/goerli\" rel=\"nofollow\"\u003eGoerli Faucet\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://sepoliafaucet.com/\" rel=\"nofollow\"\u003eSepolia Faucet\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://sepolia.etherscan.io/\" rel=\"nofollow\"\u003eSepolia Etherscan\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eRinkeby Faucet (Check the \u003ca href=\"https://docs.chain.link/docs/link-token-contracts/#rinkeby\" rel=\"nofollow\"\u003elink token contracts page\u003c/a\u003e)\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eNOTE: You can always find the most up to date faucets at \u003ca href=\"https://faucets.chain.link/\" rel=\"nofollow\"\u003efaucets.chain.link\u003c/a\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003eOR, use the \u003ca href=\"https://faucets.chain.link/\" rel=\"nofollow\"\u003eKovan ETH Faucet\u003c/a\u003e, just be sure to swap your metamask to kovan!\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://ethereum.org/en/developers/docs/gas/\" rel=\"nofollow\"\u003eGas and Gas Fees\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://eth-converter.com/\" rel=\"nofollow\"\u003eWei, Gwei, and Ether Converter\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003cli\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://ethgasstation.info/\" rel=\"nofollow\"\u003eETH Gas Station\u003c/a\u003e\u003c/p\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHow Do Blockchains Work?\u003c/h2\u003e\u003ca id=\"user-content-how-do-blockchains-work\" class=\"anchor\" aria-label=\"Permalink: How Do Blockchains Work?\" href=\"#how-do-blockchains-work\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://andersbrownworth.com/blockchain/\" rel=\"nofollow\"\u003eBlockchain Demo\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://andersbrownworth.com/blockchain/public-private-keys/keys\" rel=\"nofollow\"\u003ePublic / Private Keys\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.org/en/developers/docs/scaling/layer-2-rollups/\" rel=\"nofollow\"\u003eLayer 2 and Rollups\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://blog.chain.link/what-is-the-blockchain-oracle-problem/\" rel=\"nofollow\"\u003eDecentralized Blockchain Oracles\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.investopedia.com/terms/b/block-reward.asp\" rel=\"nofollow\"\u003eBlock Rewards\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://geth.ethereum.org/docs/getting-started\" rel=\"nofollow\"\u003eRun Your Own Ethereum Node\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eConsensus\u003c/h3\u003e\u003ca id=\"user-content-consensus\" class=\"anchor\" aria-label=\"Permalink: Consensus\" href=\"#consensus\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://wiki.polkadot.network/docs/learn-consensus\" rel=\"nofollow\"\u003eConsensus\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.org/en/developers/docs/consensus-mechanisms/pos/\" rel=\"nofollow\"\u003eProof of Stake\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.org/en/developers/docs/consensus-mechanisms/pow/\" rel=\"nofollow\"\u003eProof of Work\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://blockonomi.com/nakamoto-consensus/\" rel=\"nofollow\"\u003eNakamoto Consensus\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eThe Future\u003c/h2\u003e\u003ca id=\"user-content-the-future\" class=\"anchor\" aria-label=\"Permalink: The Future\" href=\"#the-future\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.org/en/eth2/\" rel=\"nofollow\"\u003eEthereum 2\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eMiscellaneous\u003c/h2\u003e\u003ca id=\"user-content-miscellaneous\" class=\"anchor\" aria-label=\"Permalink: Miscellaneous\" href=\"#miscellaneous\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://www.investopedia.com/tech/what-dao/\" rel=\"nofollow\"\u003eDAOs\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 1: \u003ca href=\"https://github.com/PatrickAlphaC/simple_storage\"\u003eWelcome to Remix! Simple Storage\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-1-welcome-to-remix-simple-storage\" class=\"anchor\" aria-label=\"Permalink: Lesson 1: Welcome to Remix! Simple Storage\" href=\"#lesson-1-welcome-to-remix-simple-storage\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/simple_storage\"\u003ehttps://github.com/PatrickAlphaC/simple_storage\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEverything in this section can be read about in the \u003ca href=\"https://docs.soliditylang.org/en/v0.8.6/index.html\" rel=\"nofollow\"\u003eSolidity Documentation\u003c/a\u003e\u003c/h3\u003e\u003ca id=\"user-content-everything-in-this-section-can-be-read-about-in-the-solidity-documentation\" class=\"anchor\" aria-label=\"Permalink: Everything in this section can be read about in the Solidity Documentation\" href=\"#everything-in-this-section-can-be-read-about-in-the-solidity-documentation\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ca href=\"https://remix.ethereum.org/\" rel=\"nofollow\"\u003eRemix\u003c/a\u003e\u003c/h3\u003e\u003ca id=\"user-content-remix\" class=\"anchor\" aria-label=\"Permalink: Remix\" href=\"#remix\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBasic Solidity\u003c/h3\u003e\u003ca id=\"user-content-basic-solidity\" class=\"anchor\" aria-label=\"Permalink: Basic Solidity\" href=\"#basic-solidity\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eVersioning\u003c/li\u003e\n\u003cli\u003eCompiling\u003c/li\u003e\n\u003cli\u003eContract Declaration\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.soliditylang.org/en/v0.8.6/types.html\" rel=\"nofollow\"\u003eTypes \u0026amp; Declaring Variables\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003euint256\u003c/code\u003e, \u003ccode\u003eint256\u003c/code\u003e, \u003ccode\u003ebool\u003c/code\u003e, \u003ccode\u003estring\u003c/code\u003e, \u003ccode\u003eaddress\u003c/code\u003e, \u003ccode\u003ebytes32\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eDefault Initializations\u003c/li\u003e\n\u003cli\u003eComments\u003c/li\u003e\n\u003cli\u003eFunctions\u003c/li\u003e\n\u003cli\u003eDeploying a Contract\u003c/li\u003e\n\u003cli\u003eCalling a public state-changing Function\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.soliditylang.org/en/v0.7.3/contracts.html#visibility-and-getters\" rel=\"nofollow\"\u003eVisibility\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eScope\u003c/li\u003e\n\u003cli\u003eView \u0026amp; Pure Functions\u003c/li\u003e\n\u003cli\u003eStructs\u003c/li\u003e\n\u003cli\u003eIntro to Storage\u003c/li\u003e\n\u003cli\u003eArrays - Dynamic \u0026amp; Fixed sized\u003c/li\u003e\n\u003cli\u003eCompiler Errors and Warnings\u003c/li\u003e\n\u003cli\u003eMemory\u003c/li\u003e\n\u003cli\u003eMappings\u003c/li\u003e\n\u003cli\u003eSPDX License\u003c/li\u003e\n\u003cli\u003eRecap\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDeploying to a \"Live\" network\u003c/h3\u003e\u003ca id=\"user-content-deploying-to-a-live-network\" class=\"anchor\" aria-label=\"Permalink: Deploying to a \u0026quot;Live\u0026quot; network\" href=\"#deploying-to-a-live-network\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eA testnet or mainnet\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://faucets.chain.link/\" rel=\"nofollow\"\u003eFind a faucet here\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eConnecting Metamask\u003c/li\u003e\n\u003cli\u003eInteracting with Deployed Contracts\u003c/li\u003e\n\u003cli\u003eThe EVM\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 2: \u003ca href=\"https://github.com/PatrickAlphaC/storage_factory\"\u003eStorage Factory\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-2-storage-factory\" class=\"anchor\" aria-label=\"Permalink: Lesson 2: Storage Factory\" href=\"#lesson-2-storage-factory\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/storage_factory\"\u003ehttps://github.com/PatrickAlphaC/storage_factory\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInheritance, Factory Pattern, and Interacting with External Contracts\u003c/h3\u003e\u003ca id=\"user-content-inheritance-factory-pattern-and-interacting-with-external-contracts\" class=\"anchor\" aria-label=\"Permalink: Inheritance, Factory Pattern, and Interacting with External Contracts\" href=\"#inheritance-factory-pattern-and-interacting-with-external-contracts\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eFactory Pattern\u003c/li\u003e\n\u003cli\u003eImports\u003c/li\u003e\n\u003cli\u003eDeploy a Contract From a Contract\u003c/li\u003e\n\u003cli\u003eInteract With a Deployed Contract\u003c/li\u003e\n\u003cli\u003eRecap\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 3: \u003ca href=\"https://github.com/PatrickAlphaC/fund_me\"\u003eFund Me\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-3-fund-me\" class=\"anchor\" aria-label=\"Permalink: Lesson 3: Fund Me\" href=\"#lesson-3-fund-me\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/fund_me\"\u003ehttps://github.com/PatrickAlphaC/fund_me\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003ePayable, msg.sender, msg.value, Units of Measure\u003c/h3\u003e\u003ca id=\"user-content-payable-msgsender-msgvalue-units-of-measure\" class=\"anchor\" aria-label=\"Permalink: Payable, msg.sender, msg.value, Units of Measure\" href=\"#payable-msgsender-msgvalue-units-of-measure\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003ePayable\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://eth-converter.com/\" rel=\"nofollow\"\u003eWei/Gwei/Eth Converter\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003emsg.sender \u0026amp; msg.value\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eChainlink Oracles\u003c/h3\u003e\u003ca id=\"user-content-chainlink-oracles\" class=\"anchor\" aria-label=\"Permalink: Chainlink Oracles\" href=\"#chainlink-oracles\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDecentralized Oracle Network Chainlink\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eBlockchains can't make API calls\u003c/li\u003e\n\u003cli\u003eCentralized Nodes are Points of Failure\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://data.chain.link/\" rel=\"nofollow\"\u003edata.chain.link\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eGetting External Data with Chainlink Oracles\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/\" rel=\"nofollow\"\u003eChainlink\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/link-token-contracts/\" rel=\"nofollow\"\u003eFaucets and Contract Addresses\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/link-token-contracts/#kovan\" rel=\"nofollow\"\u003eKovan\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/get-the-latest-price/\" rel=\"nofollow\"\u003eGetting Price Information\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eImporting from NPM and Advanced Solidity\u003c/h3\u003e\u003ca id=\"user-content-importing-from-npm-and-advanced-solidity\" class=\"anchor\" aria-label=\"Permalink: Importing from NPM and Advanced Solidity\" href=\"#importing-from-npm-and-advanced-solidity\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDecimals/Floating Point Numbers in Solidity\u003c/li\u003e\n\u003cli\u003elatestRoundData\u003c/li\u003e\n\u003cli\u003eImporting from NPM in Remix\u003c/li\u003e\n\u003cli\u003eInterfaces\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eIntroduction to ABIs\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/reference-contracts/\" rel=\"nofollow\"\u003eGetting Price Feed Addresses\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003egetPrice\u003c/li\u003e\n\u003cli\u003eTuples\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eUnused Tuple Variables\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eMatching Units (WEI/GWEI/ETH)\u003c/li\u003e\n\u003cli\u003egetConversionRate\u003c/li\u003e\n\u003cli\u003eMatching Units (Continued)\u003c/li\u003e\n\u003cli\u003eSafeMath \u0026amp; Integer Overflow\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eusing keyword\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.soliditylang.org/en/v0.8.6/contracts.html#libraries\" rel=\"nofollow\"\u003eLibraries\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eSafeMath PSA\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eSetting a Threshold\u003c/li\u003e\n\u003cli\u003eRequire\u003c/li\u003e\n\u003cli\u003eRevert\u003c/li\u003e\n\u003cli\u003eWithdraw Function\u003c/li\u003e\n\u003cli\u003eTransfer\u003c/li\u003e\n\u003cli\u003eBalance\u003c/li\u003e\n\u003cli\u003ethis\u003c/li\u003e\n\u003cli\u003eContract Owners\u003c/li\u003e\n\u003cli\u003eConstructor\u003c/li\u003e\n\u003cli\u003e==\u003c/li\u003e\n\u003cli\u003eModifiers\u003c/li\u003e\n\u003cli\u003eResetting\u003c/li\u003e\n\u003cli\u003efor loop\u003c/li\u003e\n\u003cli\u003eArray Length\u003c/li\u003e\n\u003cli\u003eForcing a Transaction\u003c/li\u003e\n\u003cli\u003eRecap\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 4: \u003ca href=\"https://github.com/PatrickAlphaC/web3_py_simple_storage\"\u003eWeb3.py Simple Storage\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-4-web3py-simple-storage\" class=\"anchor\" aria-label=\"Permalink: Lesson 4: Web3.py Simple Storage\" href=\"#lesson-4-web3py-simple-storage\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/web3_py_simple_storage\"\u003ehttps://github.com/PatrickAlphaC/web3_py_simple_storage\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInstalling VSCode, Python, and Web3\u003c/h3\u003e\u003ca id=\"user-content-installing-vscode-python-and-web3\" class=\"anchor\" aria-label=\"Permalink: Installing VSCode, Python, and Web3\" href=\"#installing-vscode-python-and-web3\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://chain.link/bootcamp/brownie-setup-instructions\" rel=\"nofollow\"\u003eDeveloper Bootcamp Setup Instructions (metamask, vscode, python, nodejs..)\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://code.visualstudio.com/download\" rel=\"nofollow\"\u003eVSCode\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/watch?v=WPqXP_kLzpo\" rel=\"nofollow\"\u003eVSCode Crash Course\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eExtensions\u003c/li\u003e\n\u003cli\u003eShort Cuts:\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://code.visualstudio.com/docs/getstarted/keybindings\" rel=\"nofollow\"\u003eVSCode Shortcuts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://code.visualstudio.com/shortcuts/keyboard-shortcuts-macos.pdf\" rel=\"nofollow\"\u003eVSCode MacOS Shortcuts\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.python.org/downloads/\" rel=\"nofollow\"\u003ePython\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eInstall Troubleshooting\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eTerminal\u003c/li\u003e\n\u003cli\u003eMaking a directory/Folder\u003c/li\u003e\n\u003cli\u003eOpening the folder up with VSCode\u003c/li\u003e\n\u003cli\u003eCreating a new file\u003c/li\u003e\n\u003cli\u003eSyntax Highlights\u003c/li\u003e\n\u003cli\u003eRemember to save!\u003c/li\u003e\n\u003cli\u003eSetting linting compile version\u003c/li\u003e\n\u003cli\u003eVSCode Solidity Settings\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eFormatting \u0026amp; Format on Save\u003c/li\u003e\n\u003cli\u003eSolidity Prettier\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://pypi.org/project/black/\" rel=\"nofollow\"\u003ePython Black\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://pypi.org/project/pip/\" rel=\"nofollow\"\u003epip\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eOur First Python Script with Web3.py - Deploying a Contract\u003c/h3\u003e\u003ca id=\"user-content-our-first-python-script-with-web3py---deploying-a-contract\" class=\"anchor\" aria-label=\"Permalink: Our First Python Script with Web3.py - Deploying a Contract\" href=\"#our-first-python-script-with-web3py---deploying-a-contract\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eReading our solidity file\u003c/li\u003e\n\u003cli\u003eRunning a Python Script in the Terminal\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://code.visualstudio.com/shortcuts/keyboard-shortcuts-macos.pdf\" rel=\"nofollow\"\u003eMaxOS Shortcuts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://code.visualstudio.com/shortcuts/keyboard-shortcuts-windows.pdf\" rel=\"nofollow\"\u003eWindows Shortcuts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://code.visualstudio.com/shortcuts/keyboard-shortcuts-linux.pdf\" rel=\"nofollow\"\u003eLinux Shortcuts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eCompiling in Python\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://pypi.org/project/py-solc-x/\" rel=\"nofollow\"\u003epy-solc-x\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003ecompile_standard\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eColorized Brackets\u003c/li\u003e\n\u003cli\u003eJSON ABI\u003c/li\u003e\n\u003cli\u003eSaving Compiled Code\u003c/li\u003e\n\u003cli\u003eFormatting JSON\u003c/li\u003e\n\u003cli\u003eDeploying in Python\n\u003col dir=\"auto\"\u003e\n\u003cli\u003eGet Bytecode\u003c/li\u003e\n\u003cli\u003eGet ABI\u003c/li\u003e\n\u003cli\u003eChoose Blockchain to Deploy To\u003c/li\u003e\n\u003c/ol\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eLocal Ganache Chain\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://www.trufflesuite.com/ganache\" rel=\"nofollow\"\u003eGanache UI\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/trufflesuite/ganache-cli\"\u003eGanache Command Line\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://web3py.readthedocs.io/en/stable/\" rel=\"nofollow\"\u003eWeb3.py\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eHTTP / RPC Provider\u003c/li\u003e\n\u003cli\u003ePrivate Keys MUST start with \"0x\"\u003c/li\u003e\n\u003cli\u003eContract Object\u003c/li\u003e\n\u003cli\u003eBuilding a Transaction\u003c/li\u003e\n\u003cli\u003eAccount Nonce\u003c/li\u003e\n\u003cli\u003eCalling \"Constructor\"\u003c/li\u003e\n\u003cli\u003eTransaction Parameters\u003c/li\u003e\n\u003cli\u003eSigning the Transaction\u003c/li\u003e\n\u003cli\u003eNEVER put your private key directly in your code\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.twilio.com/blog/2017/01/how-to-set-environment-variables.html\" rel=\"nofollow\"\u003eSetting Environment Variables (Windows, Linux, MacOS)\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/watch?v=tqWDiu8a4gc\u0026amp;t=40s\" rel=\"nofollow\"\u003eMore on Windows Environment Variables\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eExported Environment Variables Only Last the Duration of the Shell/Terminal\u003c/li\u003e\n\u003cli\u003ePrivate Key PSA\u003c/li\u003e\n\u003cli\u003e.env file\u003c/li\u003e\n\u003cli\u003e.gitignore\u003c/li\u003e\n\u003cli\u003eLoading .env File in Python\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://pypi.org/project/python-dotenv/\" rel=\"nofollow\"\u003epython-dotenv\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eViewing our Transaction / Deployment in Ganache\u003c/li\u003e\n\u003cli\u003eWaiting for Block Confirmations\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInteracting with Our Contract in Python \u0026amp; Web3.py\u003c/h3\u003e\u003ca id=\"user-content-interacting-with-our-contract-in-python--web3py\" class=\"anchor\" aria-label=\"Permalink: Interacting with Our Contract in Python \u0026amp; Web3.py\" href=\"#interacting-with-our-contract-in-python--web3py\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e2 Things you always need\n\u003col dir=\"auto\"\u003e\n\u003cli\u003eContract Address\u003c/li\u003e\n\u003cli\u003eContract ABI\u003c/li\u003e\n\u003c/ol\u003e\n\u003c/li\u003e\n\u003cli\u003eGetting address from transaction receipt\u003c/li\u003e\n\u003cli\u003eCalling a view function with web3.py\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eCall vs Transact\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eUpdating State with Web3.py\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/trufflesuite/ganache-cli\"\u003eganache-cli\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eInstalling Ganache\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://nodejs.org/en/\" rel=\"nofollow\"\u003eInstall Nodejs\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://classic.yarnpkg.com/en/docs/install\" rel=\"nofollow\"\u003eInstall Yarn\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eWorking with ganache-cli\u003c/li\u003e\n\u003cli\u003eOpen a new terminal in the same window\u003c/li\u003e\n\u003cli\u003eDeploying to a testnet\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://infura.io/\" rel=\"nofollow\"\u003eInfura\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.alchemy.com/\" rel=\"nofollow\"\u003eAlchemy\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eUsing Infura RPC URL / HTTP Provider\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://chainlist.org/\" rel=\"nofollow\"\u003eChain Ids\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eWow this seems like a lot of work... Is there a better way?\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 5: \u003ca href=\"https://github.com/PatrickAlphaC/brownie_simple_storage\"\u003eBrownie Simple Storage\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-5-brownie-simple-storage\" class=\"anchor\" aria-label=\"Permalink: Lesson 5: Brownie Simple Storage\" href=\"#lesson-5-brownie-simple-storage\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/brownie_simple_storage\"\u003ehttps://github.com/PatrickAlphaC/brownie_simple_storage\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBrownie Introduction\u003c/h3\u003e\u003ca id=\"user-content-brownie-introduction\" class=\"anchor\" aria-label=\"Permalink: Brownie Introduction\" href=\"#brownie-introduction\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eSome Users:\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://yearn.finance/\" rel=\"nofollow\"\u003ehttps://yearn.finance/\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://curve.fi/\" rel=\"nofollow\"\u003ehttps://curve.fi/\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://badger.finance/\" rel=\"nofollow\"\u003ehttps://badger.finance/\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInstalling Brownie\u003c/h3\u003e\u003ca id=\"user-content-installing-brownie\" class=\"anchor\" aria-label=\"Permalink: Installing Brownie\" href=\"#installing-brownie\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://eth-brownie.readthedocs.io/en/stable/install.html\" rel=\"nofollow\"\u003eInstalling Brownie\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eInstall pipx\u003c/li\u003e\n\u003cli\u003epipx install eth-brownie\u003c/li\u003e\n\u003cli\u003eTesting Successful Install\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBrownie Simple Storage Project\u003c/h3\u003e\u003ca id=\"user-content-brownie-simple-storage-project\" class=\"anchor\" aria-label=\"Permalink: Brownie Simple Storage Project\" href=\"#brownie-simple-storage-project\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eA new Brownie project with \u003ccode\u003ebrownie init\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eProject Basic Explanation\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eAdding \u003ccode\u003eSimpleStorage.sol\u003c/code\u003e to the \u003ccode\u003econtracts\u003c/code\u003e folder\u003c/li\u003e\n\u003cli\u003eCompiling with \u003ccode\u003ebrownie compile\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eBrownie deploy script\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003edef main\u003c/code\u003e is brownie's entry point\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003ebrownie defaults to a \u003ccode\u003edevelopment\u003c/code\u003e \u003ccode\u003eganache\u003c/code\u003e chain that it creates\u003c/li\u003e\n\u003cli\u003ePlacing functions outside of the \u003ccode\u003emain\u003c/code\u003e function\u003c/li\u003e\n\u003cli\u003ebrownie \u003ccode\u003eaccounts\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e3 Ways to Add Accounts\n\u003col dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eaccounts[0]\u003c/code\u003e: Brownie's \"default\" ganache accounts\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eOnly works for local ganache\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eaccounts.load(\"...\")\u003c/code\u003e: Brownie's encrypted command line (MOST SECURE)\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eRun \u003ccode\u003ebrownie accounts new \u0026lt;name\u0026gt;\u003c/code\u003e and enter your private key and a password\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eaccounts.add(config[\"wallets\"][\"from_key\"])\u003c/code\u003e: Storing Private Keys as an environment variable, and pulling from our \u003ccode\u003ebrownie-config.yaml\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eYou'll need to add \u003ccode\u003edotenv: .env\u003c/code\u003e to your \u003ccode\u003ebrownie-config.yaml\u003c/code\u003e and have a \u003ccode\u003e.env\u003c/code\u003e file\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ol\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eImporting a Contract\u003c/li\u003e\n\u003cli\u003eContract.Deploy\u003c/li\u003e\n\u003cli\u003eView Function Call in Brownie\u003c/li\u003e\n\u003cli\u003eState-Changing Function Call in Brownie / Contract Interaction\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etransaction.wait(1)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTesting Basics\u003c/h3\u003e\u003ca id=\"user-content-testing-basics\" class=\"anchor\" aria-label=\"Permalink: Testing Basics\" href=\"#testing-basics\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etest_simple_storage.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eArrange, Act, Assert\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.pytest.org/en/6.2.x/assert.html\" rel=\"nofollow\"\u003e\u003ccode\u003eassert\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ebrownie test\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etest_updating_storage\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.pytest.org/en/6.2.x/\" rel=\"nofollow\"\u003ePytest / Brownie Test Tips\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eDeploy to a Testnet\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ebrownie networks list\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eDevelopment vs Ethereum\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDevelopment is temporary\u003c/li\u003e\n\u003cli\u003eEthereum networks persist\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eRPC URL / HTTP Provider in Brownie\u003c/li\u003e\n\u003cli\u003eThe network flag\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003elist index out of range\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eget_account()\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003enetworks.show_active()\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003ebuild/deployments\u003c/li\u003e\n\u003cli\u003eAccessing previous deployments\u003c/li\u003e\n\u003cli\u003eInteracting with contracts deployed in our brownie project\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e[Brownie console]\u003c/h3\u003e\u003ca id=\"user-content-brownie-console\" class=\"anchor\" aria-label=\"Permalink: [Brownie console]\" href=\"#brownie-console\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003ebrownie console\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 6: \u003ca href=\"https://github.com/PatrickAlphaC/brownie_fund_me\"\u003eBrownie Fund Me\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-6-brownie-fund-me\" class=\"anchor\" aria-label=\"Permalink: Lesson 6: Brownie Fund Me\" href=\"#lesson-6-brownie-fund-me\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/brownie_fund_me\"\u003ehttps://github.com/PatrickAlphaC/brownie_fund_me\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eIntroduction\u003c/h3\u003e\u003ca id=\"user-content-introduction\" class=\"anchor\" aria-label=\"Permalink: Introduction\" href=\"#introduction\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eSetup\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDependencies, Deploying, and Networks\u003c/h3\u003e\u003ca id=\"user-content-dependencies-deploying-and-networks\" class=\"anchor\" aria-label=\"Permalink: Dependencies, Deploying, and Networks\" href=\"#dependencies-deploying-and-networks\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDependencies\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/smartcontractkit/chainlink-brownie-contracts\"\u003echainlink-brownie-contracts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eremappings\u003c/li\u003e\n\u003cli\u003eDeploy Script (V1)\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ehelpful_scripts.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003e__init__.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eDeploy to Rinkeby\u003c/li\u003e\n\u003cli\u003eContract Verification (\u003ccode\u003epublish_source\u003c/code\u003e)\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eThe Manual Way\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\"Flattening\"\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eThe Programmatic Way\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eGetting an \u003ca href=\"https://etherscan.io/apis\" rel=\"nofollow\"\u003eEtherscan API Key\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eETHERSCAN_TOKEN\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eInteracting with Etherscan\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eDeploying to Local Chains\u003c/li\u003e\n\u003cli\u003eIntroduction to Mocking\u003c/li\u003e\n\u003cli\u003eConstructor Parameters\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003enetworks\u003c/code\u003e in our \u003ccode\u003ebrownie-config.yaml\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eCopying \u003ca href=\"https://github.com/smartcontractkit/chainlink-mix\"\u003eMock Contracts from chainlink-mix\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eDeploying and using our mock\u003c/li\u003e\n\u003cli\u003eRefactoring\u003c/li\u003e\n\u003cli\u003eDeploying to a persistent ganache\u003c/li\u003e\n\u003cli\u003ebrownie attach\u003c/li\u003e\n\u003cli\u003eAdding a persistent brownie network\u003c/li\u003e\n\u003cli\u003eresetting a network build\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFunding and Withdrawing Python Scripts\u003c/h3\u003e\u003ca id=\"user-content-funding-and-withdrawing-python-scripts\" class=\"anchor\" aria-label=\"Permalink: Funding and Withdrawing Python Scripts\" href=\"#funding-and-withdrawing-python-scripts\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eWhoops! Let's fix an issue...\u003c/li\u003e\n\u003cli\u003eFund Script\u003c/li\u003e\n\u003cli\u003eWithdraw Script\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTesting across networks\u003c/h3\u003e\u003ca id=\"user-content-testing-across-networks\" class=\"anchor\" aria-label=\"Permalink: Testing across networks\" href=\"#testing-across-networks\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etest_can_fund_and_withdraw\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003edefault networks\u003c/li\u003e\n\u003cli\u003epytest \u003ccode\u003epip install pytest\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003epytest.skip\u003c/li\u003e\n\u003cli\u003ebrownie exceptions\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003emainnet-fork\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eCustom mainnet fork\u003c/li\u003e\n\u003cli\u003eAdding a development brownie network\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003ebrownie networks add development mainnet-fork-dev cmd=ganache-cli host=http://127.0.0.1 fork='https://infura.io/v3/$WEB3_INFURA_PROJECT_ID' accounts=10 mnemonic=brownie port=8545\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.alchemy.com/\" rel=\"nofollow\"\u003eAlchemy\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ebrownie test --network mainnet-fork\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003ebrownie ganache vs local ganache vs mainnet-fork vs testnet...\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eGit\u003c/h3\u003e\u003ca id=\"user-content-git\" class=\"anchor\" aria-label=\"Permalink: Git\" href=\"#git\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://git-scm.com/book/en/v2/Getting-Started-Installing-Git\" rel=\"nofollow\"\u003eInstalling Git\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eCreating a repository\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup\" rel=\"nofollow\"\u003eFirst time with git\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.github.com/en/github/importing-your-projects-to-github/importing-source-code-to-github/adding-an-existing-project-to-github-using-the-command-line\"\u003eAdding our project to github\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eTweet it out!\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCompatibility with Ganache UI\u003c/h3\u003e\u003ca id=\"user-content-compatibility-with-ganache-ui\" class=\"anchor\" aria-label=\"Permalink: Compatibility with Ganache UI\" href=\"#compatibility-with-ganache-ui\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etest_only_owner_can_withdraw()\u003c/code\u003e gives below error if the selected network is Ganache UI::\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"E ValueError: Execution reverted during call: 'VM Exception while processing transaction: revert'. This transaction will likely revert. If you wish to broadcast, include `allow_revert:True` as a transaction parameter.\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eE ValueError: Execution reverted during call: 'VM Exception while processing transaction: revert'. This transaction will likely revert. If you wish to broadcast, include `allow_revert:True` as a transaction parameter.\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://ethereum.stackexchange.com/questions/114889/deploying-ganache-local-w-brownie-vm-exception-while-processing-transaction-in\" rel=\"nofollow\"\u003eMore information here.\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 7: \u003ca href=\"https://github.com/PatrickAlphaC/smartcontract-lottery\"\u003eSmartContract Lottery\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-7-smartcontract-lottery\" class=\"anchor\" aria-label=\"Permalink: Lesson 7: SmartContract Lottery\" href=\"#lesson-7-smartcontract-lottery\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/smartcontract-lottery\"\u003ehttps://github.com/PatrickAlphaC/smartcontract-lottery\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://docs.chain.link/vrf/v1/examples/get-a-random-number\" rel=\"nofollow\"\u003eChainlink VRF v1 docs\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eIntroduction\u003c/h3\u003e\u003ca id=\"user-content-introduction-1\" class=\"anchor\" aria-label=\"Permalink: Introduction\" href=\"#introduction-1\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eAdd a \u003ccode\u003eREADME.md\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eDefining the project\u003c/li\u003e\n\u003cli\u003eIs it decentralized?\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eLottery.sol\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-lotterysol\" class=\"anchor\" aria-label=\"Permalink: Lottery.sol\" href=\"#lotterysol\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003ebasic setup\u003c/li\u003e\n\u003cli\u003eMain Functions\u003c/li\u003e\n\u003cli\u003eaddress payable[]\u003c/li\u003e\n\u003cli\u003egetEntranceFee \u0026amp; Setup\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/get-the-latest-price/\" rel=\"nofollow\"\u003eChainlink Price Feed\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003ebrownie-config\u003c/li\u003e\n\u003cli\u003eSPDX\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eMatching Units of Measure\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eCan't just divide\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eTest early and often\u003c/li\u003e\n\u003cli\u003eQuick Math Sanity Check\u003c/li\u003e\n\u003cli\u003edeleting networks\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.alchemy.com/\" rel=\"nofollow\"\u003eAlchemy\u003c/a\u003e again\u003c/li\u003e\n\u003cli\u003eEnum\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003estartLottery\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://openzeppelin.com/contracts/\" rel=\"nofollow\"\u003eOpenzeppelin\u003c/a\u003e... Is this the first openzeppelin reference?\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/OpenZeppelin/openzeppelin-contracts\"\u003eOpenzeppelin Contracts Github\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eRandomness\u003c/li\u003e\n\u003cli\u003ePseudorandomness\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eblock\u003c/code\u003e keyword\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eblock.difficulty\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eblock.timestamp\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ekeccack256\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/get-a-random-number/\" rel=\"nofollow\"\u003eTrue Randomness with Chainlink VRF\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/smartcontractkit/chainlink/blob/develop/contracts/src/v0.8/vrf/VRFConsumerBase.sol\"\u003eVRFConsumerBase.sol\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eChainlink VRF Remix Version\u003c/li\u003e\n\u003cli\u003eInheriting Constructors\u003c/li\u003e\n\u003cli\u003eOracle Gas \u0026amp; Transaction Gas\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.stackexchange.com/questions/87473/is-chainlinks-price-reference-data-free-to-consume\" rel=\"nofollow\"\u003eWhy didn't we pay gas on the price feeds?\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eChainlink Node Fees\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/architecture-request-model/\" rel=\"nofollow\"\u003eRequest And Receive Introduction\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/link-token-contracts/#kovan\" rel=\"nofollow\"\u003eKovan Faucets\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eFunding Chainlink Contracts\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/architecture-request-model/\" rel=\"nofollow\"\u003eRequest And Receive Explanation\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eA Clarification\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eendLottery\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ereturns (type variableName)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003efulfillRandomness\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eoverride\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eModulo Operation (Mod Operation %)\u003c/li\u003e\n\u003cli\u003ePaying the lottery winner\u003c/li\u003e\n\u003cli\u003eResetting the lottery\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTesting Lottery.sol\u003c/h3\u003e\u003ca id=\"user-content-testing-lotterysol\" class=\"anchor\" aria-label=\"Permalink: Testing Lottery.sol\" href=\"#testing-lotterysol\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003edeploy_lottery.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eget_account()\u003c/code\u003e refactored\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eget_contract\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003econtract_to_mock\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eContract.from_abi\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eAdding the parameters to deploying to lottery\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003evrfCoordinatorMock\u003c/code\u003e and adding mocks\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eLinkToken\u003c/code\u003e and Mocks\u003c/li\u003e\n\u003cli\u003eSuccessful Ganache Deployment!\u003c/li\u003e\n\u003cli\u003ePython Lottery Scripts/Functions\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003estart_lottery\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eBrownie tip: Remember to \u003ccode\u003etx.wait(1)\u003c/code\u003e your last transaction\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eenter_lottery\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eend_lottery\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eFunding with LINK\u003c/li\u003e\n\u003cli\u003ebrownie interfaces\u003c/li\u003e\n\u003cli\u003eWaiting for callback\u003c/li\u003e\n\u003cli\u003eIntegration Tests \u0026amp; Unit Tests\u003c/li\u003e\n\u003cli\u003eTest all lines of code\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etest_get_entrance_fee\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003epytest.skip\u003c/code\u003e (again)\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etest_cant_enter_unless_started\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etest_can_start_and_enter_lottery\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etest_can_pick_winner_correctly\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eEvents and Logs\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ecallBackWithRandomness\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLottery.sol Testnet Deployment\u003c/h3\u003e\u003ca id=\"user-content-lotterysol-testnet-deployment\" class=\"anchor\" aria-label=\"Permalink: Lottery.sol Testnet Deployment\" href=\"#lotterysol-testnet-deployment\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etopics\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://stackoverflow.com/questions/34466027/in-pytest-what-is-the-use-of-conftest-py-files\" rel=\"nofollow\"\u003econftest.py\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 8: \u003ca href=\"https://github.com/smartcontractkit/chainlink-mix\"\u003eChainlink Mix\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-8-chainlink-mix\" class=\"anchor\" aria-label=\"Permalink: Lesson 8: Chainlink Mix\" href=\"#lesson-8-chainlink-mix\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/smartcontractkit/chainlink-mix\"\u003ehttps://github.com/smartcontractkit/chainlink-mix\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ca href=\"https://github.com/brownie-mix\"\u003eBrownie Mixes\u003c/a\u003e\u003c/h2\u003e\u003ca id=\"user-content-brownie-mixes\" class=\"anchor\" aria-label=\"Permalink: Brownie Mixes\" href=\"#brownie-mixes\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 9: \u003ca href=\"https://github.com/PatrickAlphaC/erc20-brownie-py\"\u003eERC20s, EIPs, and Token Standards\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-9-erc20s-eips-and-token-standards\" class=\"anchor\" aria-label=\"Permalink: Lesson 9: ERC20s, EIPs, and Token Standards\" href=\"#lesson-9-erc20s-eips-and-token-standards\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/erc20-brownie-py\"\u003ehttps://github.com/PatrickAlphaC/erc20-brownie-py\u003c/a\u003e\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://eips.ethereum.org/EIPS/eip-20\" rel=\"nofollow\"\u003eERC20/EIP20 Standard\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eWhat is an ERC20?\u003c/li\u003e\n\u003cli\u003eCreating an ERC20\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.openzeppelin.com/contracts/2.x/api/token/erc20\" rel=\"nofollow\"\u003eOpenZeppelin ERC20\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.soliditylang.org/en/breaking/080-breaking-changes.html\" rel=\"nofollow\"\u003eSolidity 0.8\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eI Challenge you to code this yourself!\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edeploy_token.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eCopy paste \u003ccode\u003ehelpful_scripts.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eViewing our token in metamask\u003c/li\u003e\n\u003cli\u003eAdding to an exchange\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 10: \u003ca href=\"https://github.com/PatrickAlphaC/aave_brownie_py_freecode\"\u003eDefi \u0026amp; Aave\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-10-defi--aave\" class=\"anchor\" aria-label=\"Permalink: Lesson 10: Defi \u0026amp; Aave\" href=\"#lesson-10-defi--aave\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e*NOTE: This repo is now archived as kovan is no longer supported. You can still follow along with the learning, but know the code may not work the same on a different testnet.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/aave_brownie_py_freecode\"\u003ehttps://github.com/PatrickAlphaC/aave_brownie_py_freecode\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDefi Intro\u003c/h3\u003e\u003ca id=\"user-content-defi-intro\" class=\"anchor\" aria-label=\"Permalink: Defi Intro\" href=\"#defi-intro\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://defipulse.com/\" rel=\"nofollow\"\u003eDefipulse\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://defillama.com/\" rel=\"nofollow\"\u003eDefillama\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://staging.aave.com/\" rel=\"nofollow\"\u003eAave Testnet Site\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://paraswap.io/\" rel=\"nofollow\"\u003eParaswap\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eDecentralized Exchange\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAave UI\u003c/h3\u003e\u003ca id=\"user-content-aave-ui\" class=\"anchor\" aria-label=\"Permalink: Aave UI\" href=\"#aave-ui\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/link-token-contracts/#kovan\" rel=\"nofollow\"\u003eKovan ETH\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eWhat is Aave?\u003c/li\u003e\n\u003cli\u003eBorrowing and Lending\u003c/li\u003e\n\u003cli\u003eConnecting to Aave\u003c/li\u003e\n\u003cli\u003eDepositing Tokens / Lending\u003c/li\u003e\n\u003cli\u003eChecking your transaction is correct\u003c/li\u003e\n\u003cli\u003eWETH Gateway\u003c/li\u003e\n\u003cli\u003eInterest Bearing Token (aToken)\u003c/li\u003e\n\u003cli\u003eCollateral\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://makerdao.com/en/\" rel=\"nofollow\"\u003eDAI\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.investopedia.com/terms/s/stablecoin.asp\" rel=\"nofollow\"\u003eStablecoin\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.gemini.com/cryptopedia/wrapped-bitcoin-what-can-you-do\" rel=\"nofollow\"\u003eWrapped Bitcoin (wBTC)\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/faq/borrowing\" rel=\"nofollow\"\u003eWhy borrow tokens?\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://blog.chain.link/blockchain-fintech-defi-tutorial-lending-borrowing-python/\" rel=\"nofollow\"\u003eBlockchain Fintech Tutorial\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eDISCLAIMER ABOUT BORROWING\u003c/li\u003e\n\u003cli\u003eBorrowing Tokens\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/faq/liquidations\" rel=\"nofollow\"\u003eLiquidations\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eYour health factor must be above 1\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.investopedia.com/terms/s/solvency.asp\" rel=\"nofollow\"\u003eSolvent\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/faq/borrowing#what-is-the-difference-between-stable-and-variable-rate\" rel=\"nofollow\"\u003eStable vs Variable Interest Rate\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eRepaying our borrows/loans\u003c/li\u003e\n\u003cli\u003eReward token / governance token\u003c/li\u003e\n\u003cli\u003eGovernance\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ca href=\"https://github.com/PatrickAlphaC/aave_brownie_py_freecode\"\u003eProgrammatic Interactions with Aave\u003c/a\u003e\u003c/h3\u003e\u003ca id=\"user-content-programmatic-interactions-with-aave\" class=\"anchor\" aria-label=\"Permalink: Programmatic Interactions with Aave\" href=\"#programmatic-interactions-with-aave\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eQuant Defi Engineer\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/developers/\" rel=\"nofollow\"\u003eAave Documentation\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eSetup\u003c/li\u003e\n\u003cli\u003eConverting ETH -\u0026gt; WETH\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eget_weth.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/PatrickAlphaC/aave_brownie_py/blob/main/interfaces/WethInterface.sol\"\u003eIWETH\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://kovan.etherscan.io/token/0xd0a1e359811322d97991e03f863a0c30c2cf029c\" rel=\"nofollow\"\u003eKovan WETH Token Address: 0xd0a1e359811322d97991e03f863a0c30c2cf029c\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://etherscan.io/token/0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2\" rel=\"nofollow\"\u003eMainnet WETH Token Address: 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eConverting WETH -\u0026gt; ETH with \u003ccode\u003ewithdraw\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eaave_borrow.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/developers/the-core-protocol/lendingpool\" rel=\"nofollow\"\u003eLendingPool\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/developers/the-core-protocol/addresses-provider\" rel=\"nofollow\"\u003eLendingPoolAddressProvider\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/developers/deployed-contracts/deployed-contracts\" rel=\"nofollow\"\u003eLendingPool and LendingPoolAddressProvider Addresses\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eFixing import dependencies\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/aave/protocol-v2\"\u003eAave Github\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://medium.com/ethex-market/erc20-approve-allow-explained-88d6de921ce9\" rel=\"nofollow\"\u003eERC20 Approve Function\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/PatrickAlphaC/aave_brownie_py/blob/main/interfaces/IERC20.sol\"\u003eIERC20 from Patrick's repo\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edeposit\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/developers/the-core-protocol/lendingpool#getuseraccountdata\" rel=\"nofollow\"\u003egetUserAccountData\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eLiquidation Threshold\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/risk/asset-risk/risk-parameters\" rel=\"nofollow\"\u003eRisk Parameters\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eBorrowing DAI\u003c/li\u003e\n\u003cli\u003eGetting DAI Conversion Rate\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/reference-contracts/\" rel=\"nofollow\"\u003eChainlink Price Feeds\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/PatrickAlphaC/aave_brownie_py/blob/main/interfaces/AggregatorV3Interface.sol\"\u003eAggregatorV3Interface\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.aave.com/developers/the-core-protocol/lendingpool#borrow\" rel=\"nofollow\"\u003eborrow\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://etherscan.io/token/0x6b175474e89094c44da98b954eedeac495271d0f\" rel=\"nofollow\"\u003eMainnet DAI Address: 0x6b175474e89094c44da98b954eedeac495271d0f\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://aave.github.io/aave-addresses/kovan.json\" rel=\"nofollow\"\u003eAave Testnet Token Addresses\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eRepaying\u003c/li\u003e\n\u003cli\u003eKovan Run\u003c/li\u003e\n\u003cli\u003eViewing the transactions\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTesting\u003c/h3\u003e\u003ca id=\"user-content-testing\" class=\"anchor\" aria-label=\"Permalink: Testing\" href=\"#testing\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 11: \u003ca href=\"https://github.com/PatrickAlphaC/nft-demo\"\u003eNFTs\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-11-nfts\" class=\"anchor\" aria-label=\"Permalink: Lesson 11: NFTs\" href=\"#lesson-11-nfts\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/nft-demo\"\u003ehttps://github.com/PatrickAlphaC/nft-demo\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eNon-Technical Explainer\u003c/h3\u003e\u003ca id=\"user-content-non-technical-explainer\" class=\"anchor\" aria-label=\"Permalink: Non-Technical Explainer\" href=\"#non-technical-explainer\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://www.freecodecamp.org/news/how-to-make-an-nft-and-render-on-opensea-marketplace/\" rel=\"nofollow\"\u003eEnd-to-end article\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eWhat is an NFT?\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://eips.ethereum.org/EIPS/eip-721\" rel=\"nofollow\"\u003eERC721\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eToken URI\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.opensea.io/docs/2-adding-metadata\" rel=\"nofollow\"\u003eToken Metadata Example\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ipfs.io/\" rel=\"nofollow\"\u003eIPFS\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSimple NFT\u003c/h3\u003e\u003ca id=\"user-content-simple-nft\" class=\"anchor\" aria-label=\"Permalink: Simple NFT\" href=\"#simple-nft\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/PatrickAlphaC/nft-mix\"\u003ebrownie mix\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eInitial Setup\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eSimpleCollectible.sol\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.openzeppelin.com/contracts/3.x/\" rel=\"nofollow\"\u003eOpenZeppelin ERC721\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/PatrickAlphaC/nft-mix/blob/main/img/pug.png\"\u003ePug Image\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eNFT Constructor\u003c/li\u003e\n\u003cli\u003eNFT is a type of factory pattern\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ecreateCollectible\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003e_safeMint\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eTokenURI \u0026amp; Metadata\u003c/li\u003e\n\u003cli\u003eOpensea listing example\u003c/li\u003e\n\u003cli\u003eIs this decentralized?\u003c/li\u003e\n\u003cli\u003eEthereum Size and dStorage\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://ycharts.com/indicators/ethereum_chain_full_sync_data_size\" rel=\"nofollow\"\u003eEthereum Size\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.org/en/developers/docs/storage/\" rel=\"nofollow\"\u003edStorage Solutions\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.ipfs.com/\" rel=\"nofollow\"\u003eIPFS\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eYou need to have your NFT attributes both on-chain and inside your tokenURI metadata\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edeploy_and_create.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ipfs.io/ipfs/Qmd9MCGtdVz2miNumBHDbvj8bigSgTwnr4SbyH6DNnpWdt?filename=0-PUG.json\" rel=\"nofollow\"\u003eTokenURI used for the demo: https://ipfs.io/ipfs/Qmd9MCGtdVz2miNumBHDbvj8bigSgTwnr4SbyH6DNnpWdt?filename=0-PUG.json\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://chrome.google.com/webstore/detail/ipfs-companion/nibjojkomfdiaoajekhjakgkdhaomnch?hl=en\" rel=\"nofollow\"\u003eIPFS Companion\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eRinkeby Deployment\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://testnets.opensea.io/assets/0x8acb7ca932892eb83e4411b59309d44dddbc4cdf/0\" rel=\"nofollow\"\u003eOpensea Example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSimpleCollectible Testing\u003c/h3\u003e\u003ca id=\"user-content-simplecollectible-testing\" class=\"anchor\" aria-label=\"Permalink: SimpleCollectible Testing\" href=\"#simplecollectible-testing\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eWhat else with NFTs?\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAdvanced NFT\u003c/h3\u003e\u003ca id=\"user-content-advanced-nft\" class=\"anchor\" aria-label=\"Permalink: Advanced NFT\" href=\"#advanced-nft\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eAdvancedCollectible.sol\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/PatrickAlphaC/dungeons-and-dragons-nft\"\u003eDungeons and Dragons Example\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eDouble Inherited Constructors\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ecreateCollectible\u003c/code\u003e (Advanced)\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etokenIdToBreed\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eWorking with in-flight Chainlink VRF requests\u003c/li\u003e\n\u003cli\u003eDownload the NFT images from the \u003ca href=\"https://github.com/PatrickAlphaC/nft-mix\"\u003enft-mix\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esetTokenURI\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003e_isApprovedOrOwner\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eEmit events when you update mappings\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.stackexchange.com/questions/8658/what-does-the-indexed-keyword-do/8659\" rel=\"nofollow\"\u003e\u003ccode\u003eindexed\u003c/code\u003e event keyword\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAdvanced deploy_and_create\u003c/h3\u003e\u003ca id=\"user-content-advanced-deploy_and_create\" class=\"anchor\" aria-label=\"Permalink: Advanced deploy_and_create\" href=\"#advanced-deploy_and_create\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eMove \u003ccode\u003eOPENSEA_URL\u003c/code\u003e to \u003ccode\u003ehelpful_scripts\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eDeploying AdvancedCollectible\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eOpensea testnet is only compatible with Rinkeby\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.chain.link/docs/vrf-contracts/#rinkeby\" rel=\"nofollow\"\u003eRinkeby Chainlink VRF Contract Addresses\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eSpeeding through adding functions from previous projects\u003c/li\u003e\n\u003cli\u003eDeploy to Rinkeby\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ecreate_collectible.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eA quick unit test\u003c/li\u003e\n\u003cli\u003eA quick integration test\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCreating Metadata \u0026amp; IPFS\u003c/h3\u003e\u003ca id=\"user-content-creating-metadata--ipfs\" class=\"anchor\" aria-label=\"Permalink: Creating Metadata \u0026amp; IPFS\" href=\"#creating-metadata--ipfs\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003ecreate_metadata.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eget_breed\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eMetadata Folder\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003emetadata_template\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eNFT Metadata Attributes\u003c/li\u003e\n\u003cli\u003eChecking if Metadata file already exists\u003c/li\u003e\n\u003cli\u003eUploading to IPFS\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eupload_to_ipfs\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.ipfs.io/install/command-line/\" rel=\"nofollow\"\u003eDownload IPFS Command Line\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.ipfs.io/install/ipfs-desktop/\" rel=\"nofollow\"\u003eDownload IPFS Desktop\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.ipfs.io/reference/http/api/\" rel=\"nofollow\"\u003eHTTP IPFS Docs\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eipfs daemon\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://app.pinata.cloud/\" rel=\"nofollow\"\u003ePinata\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.pinata.cloud/\" rel=\"nofollow\"\u003ePinata Docs\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eRefactoring to not re-upload to IPFS\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eSetting the TokenURI\u003c/li\u003e\n\u003cli\u003eEnd-To-End Manual Testnet Test\u003c/li\u003e\n\u003cli\u003eViewing on Opensea\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLesson 12: \u003ca href=\"https://github.com/PatrickAlphaC/upgrades-mix\"\u003eUpgrades\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-lesson-12-upgrades\" class=\"anchor\" aria-label=\"Permalink: Lesson 12: Upgrades\" href=\"#lesson-12-upgrades\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/upgrades-mix\"\u003ehttps://github.com/PatrickAlphaC/upgrades-mix\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eIntroduction to upgrading smart contracts\u003c/h3\u003e\u003ca id=\"user-content-introduction-to-upgrading-smart-contracts\" class=\"anchor\" aria-label=\"Permalink: Introduction to upgrading smart contracts\" href=\"#introduction-to-upgrading-smart-contracts\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/watch?v=bdXJmWajZRY\" rel=\"nofollow\"\u003eOriginal Video\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eSmart Contracts can be upgraded!\u003c/li\u003e\n\u003cli\u003eDoes this mean they are not immutable?\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://blog.trailofbits.com/2018/09/05/contract-upgrade-anti-patterns/\" rel=\"nofollow\"\u003eTrail of Bits on Upgradeable Smart Contracts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eThe \"Not Really Upgrading\" / Parameterization Method\u003c/li\u003e\n\u003cli\u003eThe Social Yeet / Migration Method\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://blog.trailofbits.com/2018/10/29/how-contract-migration-works/\" rel=\"nofollow\"\u003eContract Migration\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eProxies\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDelegateCall\u003c/li\u003e\n\u003cli\u003eTerminology:\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eImplementation Contract\u003c/li\u003e\n\u003cli\u003eProxy Contract\u003c/li\u003e\n\u003cli\u003eUser\u003c/li\u003e\n\u003cli\u003eAdmin\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eGotchas:\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eStorage Clashes\u003c/li\u003e\n\u003cli\u003eFunction Selector\u003c/li\u003e\n\u003cli\u003eFunction Selector Clashes\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eProxy Patterns:\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://blog.openzeppelin.com/the-transparent-proxy-pattern/\" rel=\"nofollow\"\u003eTransparent Proxy Pattern\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://eips.ethereum.org/EIPS/eip-1822\" rel=\"nofollow\"\u003eUniversal Upgrade Proxy Standard\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://eips.ethereum.org/EIPS/eip-2535\" rel=\"nofollow\"\u003eDiamond/Multi-Facet Proxy\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUpgrades-mix and code\u003c/h3\u003e\u003ca id=\"user-content-upgrades-mix-and-code\" class=\"anchor\" aria-label=\"Permalink: Upgrades-mix and code\" href=\"#upgrades-mix-and-code\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eSetup\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eBox.sol\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eBoxV2.sol\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eGetting the proxy contracts\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/OpenZeppelin/openzeppelin-contracts/tree/master/contracts/proxy/transparent\"\u003eOpenzeppelin Proxy Github\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003e01_deploy_box.py\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eHooking up a proxy to our implementation contract\u003c/li\u003e\n\u003cli\u003e(Optional) \u003ca href=\"https://help.gnosis-safe.io/en/articles/3876461-create-a-safe\" rel=\"nofollow\"\u003eCreating a Gnosis Safe\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eInitializers\u003c/li\u003e\n\u003cli\u003eEncoding Initializer Function\u003c/li\u003e\n\u003cli\u003eAssigning ABI to a proxy\u003c/li\u003e\n\u003cli\u003eRunning the script\u003c/li\u003e\n\u003cli\u003eUpgrade Python Function\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTesting Upgrades\u003c/h3\u003e\u003ca id=\"user-content-testing-upgrades\" class=\"anchor\" aria-label=\"Permalink: Testing Upgrades\" href=\"#testing-upgrades\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eTesting our proxy\u003c/li\u003e\n\u003cli\u003eTesting our upgrades\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUpgrades on a testnet\u003c/h3\u003e\u003ca id=\"user-content-upgrades-on-a-testnet\" class=\"anchor\" aria-label=\"Permalink: Upgrades on a testnet\" href=\"#upgrades-on-a-testnet\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBonus Lesson 13: \u003ca href=\"https://github.com/PatrickAlphaC/defi-stake-yield-brownie-freecode\"\u003eFull Stack Defi\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"user-content-bonus-lesson-13-full-stack-defi\" class=\"anchor\" aria-label=\"Permalink: Bonus Lesson 13: Full Stack Defi\" href=\"#bonus-lesson-13-full-stack-defi\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cem\u003eNote: This section is archived as kovan is now deprecated. If you're looking to learn more Full-stack, check out the full stack portions of the hardhat/javascript video.\u003c/em\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cem\u003eLink to hardhat/javascript video with more full-stack examples: \u003ca href=\"https://github.com/smartcontractkit/full-blockchain-solidity-course-js\"\u003ehttps://github.com/smartcontractkit/full-blockchain-solidity-course-js\u003c/a\u003e\u003c/em\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e💻 Code: \u003ca href=\"https://github.com/PatrickAlphaC/defi-stake-yield-brownie-freecode\"\u003ehttps://github.com/PatrickAlphaC/defi-stake-yield-brownie-freecode\u003c/a\u003e\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://www.freecodecamp.org/news/tag/react/\" rel=\"nofollow\"\u003eFreeCodeCamp React\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eWhat are we building?\u003c/li\u003e\n\u003cli\u003eSetup\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eDappToken.sol\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eTokenFarm.sol\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etokenIsAllowed\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eaddAllowedTokens\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003emapping of a mapping\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003estakeTokens\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eissueTokens\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003egetUserTotalValue\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003egetUserSingleTokenValue\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003egetTokenValue\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esetPriceFeedContract\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eunStakeTokens\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eCan this be reentrancy attacked?\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDefi Stake Yield Brownie Scripts \u0026amp; Tests\u003c/h3\u003e\u003ca id=\"user-content-defi-stake-yield-brownie-scripts--tests\" class=\"anchor\" aria-label=\"Permalink: Defi Stake Yield Brownie Scripts \u0026amp; Tests\" href=\"#defi-stake-yield-brownie-scripts--tests\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003edeploy.py\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eDeploying DappToken\u003c/li\u003e\n\u003cli\u003eDeploying TokenFarm\u003c/li\u003e\n\u003cli\u003eAdding allowed tokens\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://erc20faucet.com/\" rel=\"nofollow\"\u003eERC20 Kovan Faucet\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eIf the link above does not work, you can get another ERC20 token using this faucet: \u003ca href=\"https://github.com/bokkypoobah/WeenusTokenFaucet\"\u003eWeenus ERC20 Faucet\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003eMocking our ERC20s\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTesting our Defi Stake Yield Brownie Dapp\u003c/h3\u003e\u003ca id=\"user-content-testing-our-defi-stake-yield-brownie-dapp\" class=\"anchor\" aria-label=\"Permalink: Testing our Defi Stake Yield Brownie Dapp\" href=\"#testing-our-defi-stake-yield-brownie-dapp\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etest_set_price_feed_contract\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etest_stake_tokens\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eFixtures\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etest_issue_tokens\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eNow you try on tests!\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFront End / Full Stack\u003c/h3\u003e\u003ca id=\"user-content-front-end--full-stack\" class=\"anchor\" aria-label=\"Permalink: Front End / Full Stack\" href=\"#front-end--full-stack\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eFront End Introduction\u003c/li\u003e\n\u003cli\u003eTypescript\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://reactjs.org/\" rel=\"nofollow\"\u003eReact\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://usedapp.readthedocs.io/en/latest/\" rel=\"nofollow\"\u003euseDapp\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.npmjs.com/package/npx\" rel=\"nofollow\"\u003enpx\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://classic.yarnpkg.com/en/docs/install/\" rel=\"nofollow\"\u003eyarn\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ecreate-react-app\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eLayout\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.freecodecamp.org/news/testing-react-hooks/\" rel=\"nofollow\"\u003eTesting Front End\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eyarn \u0026amp;\u0026amp; yarn start\u003c/li\u003e\n\u003cli\u003eConnecting our wallets\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eInstall useDapp\u003c/li\u003e\n\u003cli\u003eHeader Component\u003c/li\u003e\n\u003cli\u003eConnect Button\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://material-ui.com/\" rel=\"nofollow\"\u003eMaterial-UI\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eMaking our button nicer\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eMain.tsx\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eSending \u003ccode\u003ebrownie-config\u003c/code\u003e \u0026amp; \u003ccode\u003ebuild\u003c/code\u003e folder to our UI\u003c/li\u003e\n\u003cli\u003eHelper Config\u003c/li\u003e\n\u003cli\u003eTypeScript error suppression\u003c/li\u003e\n\u003cli\u003eGetting addresses\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://docs.ethers.io/v5/\" rel=\"nofollow\"\u003eEthers\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eOnly support kovan\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eYourWallet\u003c/code\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003esupportedTokens\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eState Hooks\u003c/li\u003e\n\u003cli\u003eShowing tokens\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eWalletBalance\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.npmjs.com/package/@ethersproject/units\" rel=\"nofollow\"\u003e\u003ccode\u003eethersproject/units\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eBalanceMsg\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eStake Form\u003c/li\u003e\n\u003cli\u003eCalling \u003ccode\u003eapprove\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003euseContractFunction\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003euseEffect\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003eNotifications\u003c/li\u003e\n\u003cli\u003eMake it pretty\u003c/li\u003e\n\u003cli\u003eAlerts\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eShoutout to \u003ca href=\"https://twitter.com/mdurkin92\" rel=\"nofollow\"\u003eMatt\u003c/a\u003e for the help on the front end!\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eClosing and Summary\u003c/h1\u003e\u003ca id=\"user-content-closing-and-summary\" class=\"anchor\" aria-label=\"Permalink: Closing and Summary\" href=\"#closing-and-summary\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSecurity\u003c/h2\u003e\u003ca id=\"user-content-security\" class=\"anchor\" aria-label=\"Permalink: Security\" href=\"#security\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://consensys.github.io/smart-contract-best-practices/\" rel=\"nofollow\"\u003eBest Practices\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://consensys.github.io/smart-contract-best-practices/attacks/\" rel=\"nofollow\"\u003eAttacks\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://hackernoon.com/how-dollar100m-got-stolen-from-defi-in-2021-price-oracle-manipulation-and-flash-loan-attacks-explained-3n6q33r1\" rel=\"nofollow\"\u003eOracle Attacks\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://quantstamp.com/blog/what-is-a-re-entrancy-attack\" rel=\"nofollow\"\u003eRe-entrancy Attacks\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.damnvulnerabledefi.xyz/\" rel=\"nofollow\"\u003eDamn Vulnerable Defi\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethernaut.openzeppelin.com/\" rel=\"nofollow\"\u003eEthernaut\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eSome Auditors\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://openzeppelin.com/\" rel=\"nofollow\"\u003eOpenZeppelin\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://sigmaprime.io/\" rel=\"nofollow\"\u003eSigmaPrime\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.trailofbits.com/\" rel=\"nofollow\"\u003eTrail of Bits\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhere do I go now?\u003c/h2\u003e\u003ca id=\"user-content-where-do-i-go-now\" class=\"anchor\" aria-label=\"Permalink: Where do I go now?\" href=\"#where-do-i-go-now\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLearning More\u003c/h3\u003e\u003ca id=\"user-content-learning-more\" class=\"anchor\" aria-label=\"Permalink: Learning More\" href=\"#learning-more\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://cryptozombies.io/\" rel=\"nofollow\"\u003eCryptoZombies\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ\" rel=\"nofollow\"\u003eDapp University\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.chainshot.com/courses\" rel=\"nofollow\"\u003eChainShot\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://academy.ivanontech.com/\" rel=\"nofollow\"\u003eIvan on Tech\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/channel/UCZM8XQjNOyG2ElPpEUtNasA\" rel=\"nofollow\"\u003eEat the Blocks\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/channel/UCn-3f8tw_E1jZvhuHatROwA\" rel=\"nofollow\"\u003ePatrick Collins\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/channel/UC_HI2i2peo1A-STdG22GFsA\" rel=\"nofollow\"\u003eAustin Griffith\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://www.youtube.com/user/boyindasouth\" rel=\"nofollow\"\u003eNader Dabit\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://ethereum.org/en/\" rel=\"nofollow\"\u003eEthereum.org\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv 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href=\"https://twitter.com/ETHIndiaco\" rel=\"nofollow\"\u003eETH India\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eBe sure to check out project grant programs!\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eVyper\u003c/h3\u003e\u003ca id=\"user-content-vyper\" class=\"anchor\" aria-label=\"Permalink: Vyper\" href=\"#vyper\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://github.com/chalex-eth/From-solidity-course-to-vyper-py\"\u003eFrom solidity course to vyper\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAnd make today an amazing day!\u003c/p\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"Table of Contents","anchor":"table-of-contents","htmlText":"Table of Contents"},{"level":1,"text":"Resources For This Course","anchor":"resources-for-this-course","htmlText":"Resources For This Course"},{"level":3,"text":"Questions","anchor":"questions","htmlText":"Questions"},{"level":3,"text":"Windows Support","anchor":"windows-support","htmlText":"Windows Support"},{"level":3,"text":"Hiccups/Issues from the Video","anchor":"hiccupsissues-from-the-video","htmlText":"Hiccups/Issues from the Video"},{"level":1,"text":"Lesson 0: Welcome To Blockchain","anchor":"lesson-0-welcome-to-blockchain","htmlText":"Lesson 0: Welcome To Blockchain"},{"level":2,"text":"What is a Blockchain?","anchor":"what-is-a-blockchain","htmlText":"What is a Blockchain?"},{"level":2,"text":"Making Your First Transaction","anchor":"making-your-first-transaction","htmlText":"Making Your First Transaction"},{"level":2,"text":"How Do Blockchains Work?","anchor":"how-do-blockchains-work","htmlText":"How Do Blockchains Work?"},{"level":3,"text":"Consensus","anchor":"consensus","htmlText":"Consensus"},{"level":2,"text":"The Future","anchor":"the-future","htmlText":"The Future"},{"level":2,"text":"Miscellaneous","anchor":"miscellaneous","htmlText":"Miscellaneous"},{"level":1,"text":"Lesson 1: Welcome to Remix! Simple Storage","anchor":"lesson-1-welcome-to-remix-simple-storage","htmlText":"Lesson 1: Welcome to Remix! Simple Storage"},{"level":3,"text":"Everything in this section can be read about in the Solidity Documentation","anchor":"everything-in-this-section-can-be-read-about-in-the-solidity-documentation","htmlText":"Everything in this section can be read about in the Solidity Documentation"},{"level":3,"text":"Remix","anchor":"remix","htmlText":"Remix"},{"level":3,"text":"Basic Solidity","anchor":"basic-solidity","htmlText":"Basic Solidity"},{"level":3,"text":"Deploying to a \"Live\" network","anchor":"deploying-to-a-live-network","htmlText":"Deploying to a \"Live\" network"},{"level":1,"text":"Lesson 2: Storage Factory","anchor":"lesson-2-storage-factory","htmlText":"Lesson 2: Storage Factory"},{"level":3,"text":"Inheritance, Factory Pattern, and Interacting with External Contracts","anchor":"inheritance-factory-pattern-and-interacting-with-external-contracts","htmlText":"Inheritance, Factory Pattern, and Interacting with External Contracts"},{"level":1,"text":"Lesson 3: Fund Me","anchor":"lesson-3-fund-me","htmlText":"Lesson 3: Fund Me"},{"level":3,"text":"Payable, msg.sender, msg.value, Units of Measure","anchor":"payable-msgsender-msgvalue-units-of-measure","htmlText":"Payable, msg.sender, msg.value, Units of Measure"},{"level":3,"text":"Chainlink Oracles","anchor":"chainlink-oracles","htmlText":"Chainlink Oracles"},{"level":3,"text":"Importing from NPM and Advanced Solidity","anchor":"importing-from-npm-and-advanced-solidity","htmlText":"Importing from NPM and Advanced Solidity"},{"level":1,"text":"Lesson 4: Web3.py Simple Storage","anchor":"lesson-4-web3py-simple-storage","htmlText":"Lesson 4: Web3.py Simple Storage"},{"level":3,"text":"Installing VSCode, Python, and Web3","anchor":"installing-vscode-python-and-web3","htmlText":"Installing VSCode, Python, and Web3"},{"level":3,"text":"Our First Python Script with Web3.py - Deploying a Contract","anchor":"our-first-python-script-with-web3py---deploying-a-contract","htmlText":"Our First Python Script with Web3.py - Deploying a Contract"},{"level":3,"text":"Interacting with Our Contract in Python \u0026 Web3.py","anchor":"interacting-with-our-contract-in-python--web3py","htmlText":"Interacting with Our Contract in Python \u0026amp; Web3.py"},{"level":1,"text":"Lesson 5: Brownie Simple Storage","anchor":"lesson-5-brownie-simple-storage","htmlText":"Lesson 5: Brownie Simple Storage"},{"level":3,"text":"Brownie Introduction","anchor":"brownie-introduction","htmlText":"Brownie Introduction"},{"level":3,"text":"Installing Brownie","anchor":"installing-brownie","htmlText":"Installing Brownie"},{"level":3,"text":"Brownie Simple Storage Project","anchor":"brownie-simple-storage-project","htmlText":"Brownie Simple Storage Project"},{"level":3,"text":"Testing Basics","anchor":"testing-basics","htmlText":"Testing Basics"},{"level":3,"text":"[Brownie console]","anchor":"brownie-console","htmlText":"[Brownie console]"},{"level":1,"text":"Lesson 6: Brownie Fund Me","anchor":"lesson-6-brownie-fund-me","htmlText":"Lesson 6: Brownie Fund Me"},{"level":3,"text":"Introduction","anchor":"introduction","htmlText":"Introduction"},{"level":3,"text":"Dependencies, Deploying, and Networks","anchor":"dependencies-deploying-and-networks","htmlText":"Dependencies, Deploying, and Networks"},{"level":3,"text":"Funding and Withdrawing Python Scripts","anchor":"funding-and-withdrawing-python-scripts","htmlText":"Funding and Withdrawing Python Scripts"},{"level":3,"text":"Testing across networks","anchor":"testing-across-networks","htmlText":"Testing across networks"},{"level":3,"text":"Git","anchor":"git","htmlText":"Git"},{"level":3,"text":"Compatibility with Ganache UI","anchor":"compatibility-with-ganache-ui","htmlText":"Compatibility with Ganache UI"},{"level":1,"text":"Lesson 7: SmartContract Lottery","anchor":"lesson-7-smartcontract-lottery","htmlText":"Lesson 7: SmartContract Lottery"},{"level":3,"text":"Introduction","anchor":"introduction-1","htmlText":"Introduction"},{"level":3,"text":"Lottery.sol","anchor":"lotterysol","htmlText":"Lottery.sol"},{"level":3,"text":"Testing Lottery.sol","anchor":"testing-lotterysol","htmlText":"Testing Lottery.sol"},{"level":3,"text":"Lottery.sol Testnet Deployment","anchor":"lotterysol-testnet-deployment","htmlText":"Lottery.sol Testnet Deployment"},{"level":1,"text":"Lesson 8: Chainlink Mix","anchor":"lesson-8-chainlink-mix","htmlText":"Lesson 8: Chainlink Mix"},{"level":2,"text":"Brownie Mixes","anchor":"brownie-mixes","htmlText":"Brownie Mixes"},{"level":1,"text":"Lesson 9: ERC20s, EIPs, and Token Standards","anchor":"lesson-9-erc20s-eips-and-token-standards","htmlText":"Lesson 9: ERC20s, EIPs, and Token Standards"},{"level":1,"text":"Lesson 10: Defi \u0026 Aave","anchor":"lesson-10-defi--aave","htmlText":"Lesson 10: Defi \u0026amp; Aave"},{"level":3,"text":"Defi Intro","anchor":"defi-intro","htmlText":"Defi Intro"},{"level":3,"text":"Aave UI","anchor":"aave-ui","htmlText":"Aave UI"},{"level":3,"text":"Programmatic Interactions with Aave","anchor":"programmatic-interactions-with-aave","htmlText":"Programmatic Interactions with Aave"},{"level":3,"text":"Testing","anchor":"testing","htmlText":"Testing"},{"level":1,"text":"Lesson 11: NFTs","anchor":"lesson-11-nfts","htmlText":"Lesson 11: NFTs"},{"level":3,"text":"Non-Technical Explainer","anchor":"non-technical-explainer","htmlText":"Non-Technical Explainer"},{"level":3,"text":"Simple NFT","anchor":"simple-nft","htmlText":"Simple NFT"},{"level":3,"text":"SimpleCollectible Testing","anchor":"simplecollectible-testing","htmlText":"SimpleCollectible Testing"},{"level":3,"text":"Advanced NFT","anchor":"advanced-nft","htmlText":"Advanced NFT"},{"level":3,"text":"Advanced deploy_and_create","anchor":"advanced-deploy_and_create","htmlText":"Advanced deploy_and_create"},{"level":3,"text":"Creating Metadata \u0026 IPFS","anchor":"creating-metadata--ipfs","htmlText":"Creating Metadata \u0026amp; IPFS"},{"level":1,"text":"Lesson 12: Upgrades","anchor":"lesson-12-upgrades","htmlText":"Lesson 12: Upgrades"},{"level":3,"text":"Introduction to upgrading smart contracts","anchor":"introduction-to-upgrading-smart-contracts","htmlText":"Introduction to upgrading smart contracts"},{"level":3,"text":"Upgrades-mix and code","anchor":"upgrades-mix-and-code","htmlText":"Upgrades-mix and code"},{"level":3,"text":"Testing Upgrades","anchor":"testing-upgrades","htmlText":"Testing Upgrades"},{"level":3,"text":"Upgrades on a testnet","anchor":"upgrades-on-a-testnet","htmlText":"Upgrades on a testnet"},{"level":1,"text":"Bonus Lesson 13: Full Stack Defi","anchor":"bonus-lesson-13-full-stack-defi","htmlText":"Bonus Lesson 13: Full Stack Defi"},{"level":3,"text":"Defi Stake Yield Brownie Scripts \u0026 Tests","anchor":"defi-stake-yield-brownie-scripts--tests","htmlText":"Defi Stake Yield Brownie Scripts \u0026amp; Tests"},{"level":3,"text":"Testing our Defi Stake Yield Brownie Dapp","anchor":"testing-our-defi-stake-yield-brownie-dapp","htmlText":"Testing our Defi Stake Yield Brownie Dapp"},{"level":3,"text":"Front End / Full Stack","anchor":"front-end--full-stack","htmlText":"Front End / Full Stack"},{"level":1,"text":"Closing and Summary","anchor":"closing-and-summary","htmlText":"Closing and Summary"},{"level":2,"text":"Security","anchor":"security","htmlText":"Security"},{"level":2,"text":"Where do I go now?","anchor":"where-do-i-go-now","htmlText":"Where do I go now?"},{"level":3,"text":"Learning More","anchor":"learning-more","htmlText":"Learning More"},{"level":3,"text":"Community","anchor":"community","htmlText":"Community"},{"level":3,"text":"Hackathons","anchor":"hackathons","htmlText":"Hackathons"},{"level":3,"text":"Vyper","anchor":"vyper","htmlText":"Vyper"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fsmartcontractkit%2Ffull-blockchain-solidity-course-py"}},{"displayName":"LICENSE","repoName":"full-blockchain-solidity-course-py","refName":"main","path":"LICENSE","preferredFileType":"license","tabName":"MIT","richText":null,"loaded":false,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":null,"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fsmartcontractkit%2Ffull-blockchain-solidity-course-py"}}],"overviewFilesProcessingTime":0}},"appPayload":{"helpUrl":"https://docs.github.com","findFileWorkerPath":"/assets-cdn/worker/find-file-worker-9f8a877aa99f.js","findInFileWorkerPath":"/assets-cdn/worker/find-in-file-worker-96e76d5fdb2c.js","githubDevUrl":null,"enabled_features":{"copilot_workspace":null,"code_nav_ui_events":false,"overview_shared_code_dropdown_button":false,"react_blob_overlay":false,"copilot_conversational_ux_embedding_update":false,"copilot_smell_icebreaker_ux":true,"accessible_code_button":true}}}}</script> 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QkQOb js-snippet-clipboard-copy-unpositioned undefined" data-hpc="true"><article class="markdown-body entry-content container-lg" itemprop="text"><p dir="auto"><em>Big Update</em>: <a href="https://sepoliafaucet.com/" rel="nofollow">New Sepolia Faucet Located Here</a>. \Kovan, Ropsten, and Rinkeby have been deprecated. Goerli Still works but we highly recommend Sepolia as its proof of stake based.</p> <p dir="auto">You'll need to verify via Twitter to get ETH & LINK. You can find <a href="https://docs.chain.link/docs/link-token-contracts/#goerli" rel="nofollow">Backup Faucets here</a>.</p> <p dir="auto">Additionally, lesson 7 uses Chainlink VRF v1 instead of v2, <a href="https://docs.chain.link/vrf/v1/examples/get-a-random-number" rel="nofollow">you can find the docs for Chainlink VRFv1 here</a>.</p> <p dir="auto"><a href="https://www.youtube.com/watch?v=M576WGiDBdQ" rel="nofollow">YouTube Video</a></p> <br> <p align="center" dir="auto"> <a href="https://www.youtube.com/watch?v=M576WGiDBdQ" rel="nofollow"> <img src="/smartcontractkit/full-blockchain-solidity-course-py/raw/main/img/youtube_thumbnail.jpeg" width="350" alt="Solidity, Blockchain, and Smart Contract Course – Beginner to Expert Python Tutorial" style="max-width: 100%;"> </a> </p> <br> <p dir="auto">Welcome to the repository for the Ultimate Solidity, Blockchain, and Smart Contract - Beginner to Expert Full Course | Python Edition FreeCodeCamp course!</p> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Table of Contents</h1><a id="user-content-table-of-contents" class="anchor" aria-label="Permalink: Table of Contents" href="#table-of-contents"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="#table-of-contents">Table of Contents</a></li> <li><a href="#resources-for-this-course">Resources For This Course</a> <ul dir="auto"> <li><a href="#questions">Questions</a></li> <li><a href="#windows-support">Windows Support</a></li> <li><a href="#hiccupsissues-from-the-video">Hiccups/Issues from the Video</a></li> </ul> </li> <li><a href="#lesson-0-welcome-to-blockchain">Lesson 0: Welcome To Blockchain</a> <ul dir="auto"> <li><a href="#what-is-a-blockchain">What is a Blockchain?</a></li> <li><a href="#making-your-first-transaction">Making Your First Transaction</a></li> <li><a href="#how-do-blockchains-work">How Do Blockchains Work?</a> <ul dir="auto"> <li><a href="#consensus">Consensus</a></li> </ul> </li> <li><a href="#the-future">The Future</a></li> <li><a href="#miscellaneous">Miscellaneous</a></li> </ul> </li> <li><a href="#lesson-1-welcome-to-remix-simple-storage">Lesson 1: Welcome to Remix! Simple Storage</a> <ul dir="auto"> <li><a href="#everything-in-this-section-can-be-read-about-in-the-solidity-documentation">Everything in this section can be read about in the Solidity Documentation</a></li> <li><a href="#remix">Remix</a></li> <li><a href="#basic-solidity">Basic Solidity</a></li> <li><a href="#deploying-to-a-live-network">Deploying to a "Live" network</a></li> </ul> </li> <li><a href="#lesson-2-storage-factory">Lesson 2: Storage Factory</a> <ul dir="auto"> <li><a href="#inheritance-factory-pattern-and-interacting-with-external-contracts">Inheritance, Factory Pattern, and Interacting with External Contracts</a></li> </ul> </li> <li><a href="#lesson-3-fund-me">Lesson 3: Fund Me</a> <ul dir="auto"> <li><a href="#payable-msgsender-msgvalue-units-of-measure">Payable, msg.sender, msg.value, Units of Measure</a></li> <li><a href="#chainlink-oracles">Chainlink Oracles</a></li> <li><a href="#importing-from-npm-and-advanced-solidity">Importing from NPM and Advanced Solidity</a></li> </ul> </li> <li><a href="#lesson-4-web3py-simple-storage">Lesson 4: Web3.py Simple Storage</a> <ul dir="auto"> <li><a href="#installing-vscode-python-and-web3">Installing VSCode, Python, and Web3</a></li> <li><a href="#our-first-python-script-with-web3py---deploying-a-contract">Our First Python Script with Web3.py - Deploying a Contract</a></li> <li><a href="#interacting-with-our-contract-in-python--web3py">Interacting with Our Contract in Python & Web3.py</a></li> </ul> </li> <li><a href="#lesson-5-brownie-simple-storage">Lesson 5: Brownie Simple Storage</a> <ul dir="auto"> <li><a href="#brownie-introduction">Brownie Introduction</a></li> <li><a href="#installing-brownie">Installing Brownie</a></li> <li><a href="#brownie-simple-storage-project">Brownie Simple Storage Project</a></li> <li><a href="#testing-basics">Testing Basics</a></li> <li><a href="#brownie-console">[Brownie console]</a></li> </ul> </li> <li><a href="#lesson-6-brownie-fund-me">Lesson 6: Brownie Fund Me</a> <ul dir="auto"> <li><a href="#introduction">Introduction</a></li> <li><a href="#dependencies-deploying-and-networks">Dependencies, Deploying, and Networks</a></li> <li><a href="#funding-and-withdrawing-python-scripts">Funding and Withdrawing Python Scripts</a></li> <li><a href="#testing-across-networks">Testing across networks</a></li> <li><a href="#git">Git</a></li> <li><a href="#compatibility-with-ganache-ui">Compatibility with Ganache UI</a></li> </ul> </li> <li><a href="#lesson-7-smartcontract-lottery">Lesson 7: SmartContract Lottery</a> <ul dir="auto"> <li><a href="#introduction-1">Introduction</a></li> <li><a href="#lotterysol"><code>Lottery.sol</code></a></li> <li><a href="#testing-lotterysol">Testing Lottery.sol</a></li> <li><a href="#lotterysol-testnet-deployment">Lottery.sol Testnet Deployment</a></li> </ul> </li> <li><a href="#lesson-8-chainlink-mix">Lesson 8: Chainlink Mix</a> <ul dir="auto"> <li><a href="#brownie-mixes">Brownie Mixes</a></li> </ul> </li> <li><a href="#lesson-9-erc20s-eips-and-token-standards">Lesson 9: ERC20s, EIPs, and Token Standards</a></li> <li><a href="#lesson-10-defi--aave">Lesson 10: Defi & Aave</a> <ul dir="auto"> <li><a href="#defi-intro">Defi Intro</a></li> <li><a href="#aave-ui">Aave UI</a></li> <li><a href="#programmatic-interactions-with-aave">Programmatic Interactions with Aave</a></li> <li><a href="#testing">Testing</a></li> </ul> </li> <li><a href="#lesson-11-nfts">Lesson 11: NFTs</a> <ul dir="auto"> <li><a href="#non-technical-explainer">Non-Technical Explainer</a></li> <li><a href="#simple-nft">Simple NFT</a></li> <li><a href="#simplecollectible-testing">SimpleCollectible Testing</a></li> <li><a href="#advanced-nft">Advanced NFT</a></li> <li><a href="#advanced-deploy_and_create">Advanced deploy_and_create</a></li> <li><a href="#creating-metadata--ipfs">Creating Metadata & IPFS</a></li> </ul> </li> <li><a href="#lesson-12-upgrades">Lesson 12: Upgrades</a> <ul dir="auto"> <li><a href="#introduction-to-upgrading-smart-contracts">Introduction to upgrading smart contracts</a></li> <li><a href="#upgrades-mix-and-code">Upgrades-mix and code</a></li> <li><a href="#testing-upgrades">Testing Upgrades</a></li> <li><a href="#upgrades-on-a-testnet">Upgrades on a testnet</a></li> </ul> </li> <li><a href="#bonus-lesson-13-full-stack-defi">Bonus Lesson 13: Full Stack Defi</a> <ul dir="auto"> <li><a href="#defi-stake-yield-brownie-scripts--tests">Defi Stake Yield Brownie Scripts & Tests</a></li> <li><a href="#testing-our-defi-stake-yield-brownie-dapp">Testing our Defi Stake Yield Brownie Dapp</a></li> <li><a href="#front-end--full-stack">Front End / Full Stack</a></li> </ul> </li> <li><a href="#closing-and-summary">Closing and Summary</a> <ul dir="auto"> <li><a href="#security">Security</a></li> <li><a href="#where-do-i-go-now">Where do I go now?</a> <ul dir="auto"> <li><a href="#learning-more">Learning More</a></li> <li><a href="#community">Community</a></li> <li><a href="#hackathons">Hackathons</a></li> <li><a href="#vyper">Vyper</a></li> </ul> </li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Resources For This Course</h1><a id="user-content-resources-for-this-course" class="anchor" aria-label="Permalink: Resources For This Course" href="#resources-for-this-course"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Questions</h3><a id="user-content-questions" class="anchor" aria-label="Permalink: Questions" href="#questions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://github.com/smartcontractkit/full-blockchain-solidity-course-py/discussions">Github Discussions</a> <ul dir="auto"> <li>Ask questions and chat about the course here!</li> </ul> </li> <li><a href="https://ethereum.stackexchange.com/" rel="nofollow">Stack Exchange Ethereum</a> <ul dir="auto"> <li>Great place for asking technical questions about Ethereum</li> </ul> </li> <li><a href="https://stackoverflow.com/" rel="nofollow">StackOverflow</a> <ul dir="auto"> <li>Great place for asking technical questions overall</li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Windows Support</h3><a id="user-content-windows-support" class="anchor" aria-label="Permalink: Windows Support" href="#windows-support"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://medium.com/@cromewar/how-to-setup-windows-10-11-for-smart-contract-development-and-brownie-e7d8d13555b3" rel="nofollow">Setup your windows environment</a> <ul dir="auto"> <li>Learn how to install all the tools you will need for this course on a windows machine</li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Hiccups/Issues from the Video</h3><a id="user-content-hiccupsissues-from-the-video" class="anchor" aria-label="Permalink: Hiccups/Issues from the Video" href="#hiccupsissues-from-the-video"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://github.com/smartcontractkit/full-blockchain-solidity-course-py/blob/main/chronological-issues-from-video.md">Chronological Issues from the Video</a> <ul dir="auto"> <li>A list of known hiccups/issues you may encounter while implementing the content from the video</li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 0: Welcome To Blockchain</h1><a id="user-content-lesson-0-welcome-to-blockchain" class="anchor" aria-label="Permalink: Lesson 0: Welcome To Blockchain" href="#lesson-0-welcome-to-blockchain"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">What is a Blockchain?</h2><a id="user-content-what-is-a-blockchain" class="anchor" aria-label="Permalink: What is a Blockchain?" href="#what-is-a-blockchain"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://bitcoin.org/bitcoin.pdf" rel="nofollow">Bitcoin Whitepaper</a></li> <li><a href="https://ethereum.org/en/whitepaper/" rel="nofollow">Ethereum Whitepaper</a></li> <li><a href="https://blog.chain.link/hybrid-smart-contracts-explained/" rel="nofollow">Hybrid Smart Contracts</a></li> <li><a href="https://betterprogramming.pub/what-is-a-blockchain-oracle-f5ccab8dbd72?source=friends_link&sk=d921a38466df8a9176ed8dd767d8c77d" rel="nofollow">Blockchain Oracles</a></li> <li><a href="https://www.investopedia.com/terms/b/blockchain.asp" rel="nofollow">What is a blockchain</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Making Your First Transaction</h2><a id="user-content-making-your-first-transaction" class="anchor" aria-label="Permalink: Making Your First Transaction" href="#making-your-first-transaction"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li> <p dir="auto"><a href="https://metamask.io/" rel="nofollow">Metamask</a></p> </li> <li> <p dir="auto"><a href="https://etherscan.io/" rel="nofollow">Etherscan</a></p> </li> <li> <p dir="auto"><a href="https://goerli.etherscan.io/" rel="nofollow">Goerli Etherscan</a></p> </li> <li> <p dir="auto"><a href="https://kovan.etherscan.io/" rel="nofollow">Kovan Etherscan</a></p> </li> <li> <p dir="auto"><a href="https://faucets.chain.link/goerli" rel="nofollow">Goerli Faucet</a></p> </li> <li> <p dir="auto"><a href="https://sepoliafaucet.com/" rel="nofollow">Sepolia Faucet</a></p> </li> <li> <p dir="auto"><a href="https://sepolia.etherscan.io/" rel="nofollow">Sepolia Etherscan</a></p> </li> <li> <p dir="auto">Rinkeby Faucet (Check the <a href="https://docs.chain.link/docs/link-token-contracts/#rinkeby" rel="nofollow">link token contracts page</a>)</p> <ul dir="auto"> <li>NOTE: You can always find the most up to date faucets at <a href="https://faucets.chain.link/" rel="nofollow">faucets.chain.link</a>.</li> </ul> </li> <li> <p dir="auto">OR, use the <a href="https://faucets.chain.link/" rel="nofollow">Kovan ETH Faucet</a>, just be sure to swap your metamask to kovan!</p> </li> <li> <p dir="auto"><a href="https://ethereum.org/en/developers/docs/gas/" rel="nofollow">Gas and Gas Fees</a></p> </li> <li> <p dir="auto"><a href="https://eth-converter.com/" rel="nofollow">Wei, Gwei, and Ether Converter</a></p> </li> <li> <p dir="auto"><a href="https://ethgasstation.info/" rel="nofollow">ETH Gas Station</a></p> </li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">How Do Blockchains Work?</h2><a id="user-content-how-do-blockchains-work" class="anchor" aria-label="Permalink: How Do Blockchains Work?" href="#how-do-blockchains-work"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://andersbrownworth.com/blockchain/" rel="nofollow">Blockchain Demo</a></li> <li><a href="https://andersbrownworth.com/blockchain/public-private-keys/keys" rel="nofollow">Public / Private Keys</a></li> <li><a href="https://ethereum.org/en/developers/docs/scaling/layer-2-rollups/" rel="nofollow">Layer 2 and Rollups</a></li> <li><a href="https://blog.chain.link/what-is-the-blockchain-oracle-problem/" rel="nofollow">Decentralized Blockchain Oracles</a></li> <li><a href="https://www.investopedia.com/terms/b/block-reward.asp" rel="nofollow">Block Rewards</a></li> <li><a href="https://geth.ethereum.org/docs/getting-started" rel="nofollow">Run Your Own Ethereum Node</a></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Consensus</h3><a id="user-content-consensus" class="anchor" aria-label="Permalink: Consensus" href="#consensus"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://wiki.polkadot.network/docs/learn-consensus" rel="nofollow">Consensus</a></li> <li><a href="https://ethereum.org/en/developers/docs/consensus-mechanisms/pos/" rel="nofollow">Proof of Stake</a></li> <li><a href="https://ethereum.org/en/developers/docs/consensus-mechanisms/pow/" rel="nofollow">Proof of Work</a></li> <li><a href="https://blockonomi.com/nakamoto-consensus/" rel="nofollow">Nakamoto Consensus</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">The Future</h2><a id="user-content-the-future" class="anchor" aria-label="Permalink: The Future" href="#the-future"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://ethereum.org/en/eth2/" rel="nofollow">Ethereum 2</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Miscellaneous</h2><a id="user-content-miscellaneous" class="anchor" aria-label="Permalink: Miscellaneous" href="#miscellaneous"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://www.investopedia.com/tech/what-dao/" rel="nofollow">DAOs</a></li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 1: <a href="https://github.com/PatrickAlphaC/simple_storage">Welcome to Remix! Simple Storage</a></h1><a id="user-content-lesson-1-welcome-to-remix-simple-storage" class="anchor" aria-label="Permalink: Lesson 1: Welcome to Remix! Simple Storage" href="#lesson-1-welcome-to-remix-simple-storage"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/simple_storage">https://github.com/PatrickAlphaC/simple_storage</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Everything in this section can be read about in the <a href="https://docs.soliditylang.org/en/v0.8.6/index.html" rel="nofollow">Solidity Documentation</a></h3><a id="user-content-everything-in-this-section-can-be-read-about-in-the-solidity-documentation" class="anchor" aria-label="Permalink: Everything in this section can be read about in the Solidity Documentation" href="#everything-in-this-section-can-be-read-about-in-the-solidity-documentation"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><a href="https://remix.ethereum.org/" rel="nofollow">Remix</a></h3><a id="user-content-remix" class="anchor" aria-label="Permalink: Remix" href="#remix"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Basic Solidity</h3><a id="user-content-basic-solidity" class="anchor" aria-label="Permalink: Basic Solidity" href="#basic-solidity"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Versioning</li> <li>Compiling</li> <li>Contract Declaration</li> <li><a href="https://docs.soliditylang.org/en/v0.8.6/types.html" rel="nofollow">Types & Declaring Variables</a> <ul dir="auto"> <li><code>uint256</code>, <code>int256</code>, <code>bool</code>, <code>string</code>, <code>address</code>, <code>bytes32</code></li> </ul> </li> <li>Default Initializations</li> <li>Comments</li> <li>Functions</li> <li>Deploying a Contract</li> <li>Calling a public state-changing Function</li> <li><a href="https://docs.soliditylang.org/en/v0.7.3/contracts.html#visibility-and-getters" rel="nofollow">Visibility</a></li> <li>Scope</li> <li>View & Pure Functions</li> <li>Structs</li> <li>Intro to Storage</li> <li>Arrays - Dynamic & Fixed sized</li> <li>Compiler Errors and Warnings</li> <li>Memory</li> <li>Mappings</li> <li>SPDX License</li> <li>Recap</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Deploying to a "Live" network</h3><a id="user-content-deploying-to-a-live-network" class="anchor" aria-label="Permalink: Deploying to a "Live" network" href="#deploying-to-a-live-network"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>A testnet or mainnet</li> <li><a href="https://faucets.chain.link/" rel="nofollow">Find a faucet here</a></li> <li>Connecting Metamask</li> <li>Interacting with Deployed Contracts</li> <li>The EVM</li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 2: <a href="https://github.com/PatrickAlphaC/storage_factory">Storage Factory</a></h1><a id="user-content-lesson-2-storage-factory" class="anchor" aria-label="Permalink: Lesson 2: Storage Factory" href="#lesson-2-storage-factory"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/storage_factory">https://github.com/PatrickAlphaC/storage_factory</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Inheritance, Factory Pattern, and Interacting with External Contracts</h3><a id="user-content-inheritance-factory-pattern-and-interacting-with-external-contracts" class="anchor" aria-label="Permalink: Inheritance, Factory Pattern, and Interacting with External Contracts" href="#inheritance-factory-pattern-and-interacting-with-external-contracts"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Factory Pattern</li> <li>Imports</li> <li>Deploy a Contract From a Contract</li> <li>Interact With a Deployed Contract</li> <li>Recap</li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 3: <a href="https://github.com/PatrickAlphaC/fund_me">Fund Me</a></h1><a id="user-content-lesson-3-fund-me" class="anchor" aria-label="Permalink: Lesson 3: Fund Me" href="#lesson-3-fund-me"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/fund_me">https://github.com/PatrickAlphaC/fund_me</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Payable, msg.sender, msg.value, Units of Measure</h3><a id="user-content-payable-msgsender-msgvalue-units-of-measure" class="anchor" aria-label="Permalink: Payable, msg.sender, msg.value, Units of Measure" href="#payable-msgsender-msgvalue-units-of-measure"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Payable</li> <li><a href="https://eth-converter.com/" rel="nofollow">Wei/Gwei/Eth Converter</a></li> <li>msg.sender & msg.value</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Chainlink Oracles</h3><a id="user-content-chainlink-oracles" class="anchor" aria-label="Permalink: Chainlink Oracles" href="#chainlink-oracles"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Decentralized Oracle Network Chainlink <ul dir="auto"> <li>Blockchains can't make API calls</li> <li>Centralized Nodes are Points of Failure</li> </ul> </li> <li><a href="https://data.chain.link/" rel="nofollow">data.chain.link</a></li> <li>Getting External Data with Chainlink Oracles <ul dir="auto"> <li><a href="https://docs.chain.link/" rel="nofollow">Chainlink</a></li> <li><a href="https://docs.chain.link/docs/link-token-contracts/" rel="nofollow">Faucets and Contract Addresses</a> <ul dir="auto"> <li><a href="https://docs.chain.link/docs/link-token-contracts/#kovan" rel="nofollow">Kovan</a></li> </ul> </li> <li><a href="https://docs.chain.link/docs/get-the-latest-price/" rel="nofollow">Getting Price Information</a></li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Importing from NPM and Advanced Solidity</h3><a id="user-content-importing-from-npm-and-advanced-solidity" class="anchor" aria-label="Permalink: Importing from NPM and Advanced Solidity" href="#importing-from-npm-and-advanced-solidity"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Decimals/Floating Point Numbers in Solidity</li> <li>latestRoundData</li> <li>Importing from NPM in Remix</li> <li>Interfaces <ul dir="auto"> <li>Introduction to ABIs</li> </ul> </li> <li><a href="https://docs.chain.link/docs/reference-contracts/" rel="nofollow">Getting Price Feed Addresses</a></li> <li>getPrice</li> <li>Tuples <ul dir="auto"> <li>Unused Tuple Variables</li> </ul> </li> <li>Matching Units (WEI/GWEI/ETH)</li> <li>getConversionRate</li> <li>Matching Units (Continued)</li> <li>SafeMath & Integer Overflow <ul dir="auto"> <li>using keyword</li> <li><a href="https://docs.soliditylang.org/en/v0.8.6/contracts.html#libraries" rel="nofollow">Libraries</a></li> <li>SafeMath PSA</li> </ul> </li> <li>Setting a Threshold</li> <li>Require</li> <li>Revert</li> <li>Withdraw Function</li> <li>Transfer</li> <li>Balance</li> <li>this</li> <li>Contract Owners</li> <li>Constructor</li> <li>==</li> <li>Modifiers</li> <li>Resetting</li> <li>for loop</li> <li>Array Length</li> <li>Forcing a Transaction</li> <li>Recap</li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 4: <a href="https://github.com/PatrickAlphaC/web3_py_simple_storage">Web3.py Simple Storage</a></h1><a id="user-content-lesson-4-web3py-simple-storage" class="anchor" aria-label="Permalink: Lesson 4: Web3.py Simple Storage" href="#lesson-4-web3py-simple-storage"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/web3_py_simple_storage">https://github.com/PatrickAlphaC/web3_py_simple_storage</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Installing VSCode, Python, and Web3</h3><a id="user-content-installing-vscode-python-and-web3" class="anchor" aria-label="Permalink: Installing VSCode, Python, and Web3" href="#installing-vscode-python-and-web3"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://chain.link/bootcamp/brownie-setup-instructions" rel="nofollow">Developer Bootcamp Setup Instructions (metamask, vscode, python, nodejs..)</a></li> <li><a href="https://code.visualstudio.com/download" rel="nofollow">VSCode</a></li> <li><a href="https://www.youtube.com/watch?v=WPqXP_kLzpo" rel="nofollow">VSCode Crash Course</a></li> <li>Extensions</li> <li>Short Cuts: <ul dir="auto"> <li><a href="https://code.visualstudio.com/docs/getstarted/keybindings" rel="nofollow">VSCode Shortcuts</a></li> <li><a href="https://code.visualstudio.com/shortcuts/keyboard-shortcuts-macos.pdf" rel="nofollow">VSCode MacOS Shortcuts</a></li> </ul> </li> <li><a href="https://www.python.org/downloads/" rel="nofollow">Python</a> <ul dir="auto"> <li>Install Troubleshooting</li> </ul> </li> <li>Terminal</li> <li>Making a directory/Folder</li> <li>Opening the folder up with VSCode</li> <li>Creating a new file</li> <li>Syntax Highlights</li> <li>Remember to save!</li> <li>Setting linting compile version</li> <li>VSCode Solidity Settings <ul dir="auto"> <li>Formatting & Format on Save</li> <li>Solidity Prettier</li> <li><a href="https://pypi.org/project/black/" rel="nofollow">Python Black</a></li> <li><a href="https://pypi.org/project/pip/" rel="nofollow">pip</a></li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Our First Python Script with Web3.py - Deploying a Contract</h3><a id="user-content-our-first-python-script-with-web3py---deploying-a-contract" class="anchor" aria-label="Permalink: Our First Python Script with Web3.py - Deploying a Contract" href="#our-first-python-script-with-web3py---deploying-a-contract"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Reading our solidity file</li> <li>Running a Python Script in the Terminal</li> <li><a href="https://code.visualstudio.com/shortcuts/keyboard-shortcuts-macos.pdf" rel="nofollow">MaxOS Shortcuts</a></li> <li><a href="https://code.visualstudio.com/shortcuts/keyboard-shortcuts-windows.pdf" rel="nofollow">Windows Shortcuts</a></li> <li><a href="https://code.visualstudio.com/shortcuts/keyboard-shortcuts-linux.pdf" rel="nofollow">Linux Shortcuts</a></li> <li>Compiling in Python</li> <li><a href="https://pypi.org/project/py-solc-x/" rel="nofollow">py-solc-x</a> <ul dir="auto"> <li>compile_standard</li> </ul> </li> <li>Colorized Brackets</li> <li>JSON ABI</li> <li>Saving Compiled Code</li> <li>Formatting JSON</li> <li>Deploying in Python <ol dir="auto"> <li>Get Bytecode</li> <li>Get ABI</li> <li>Choose Blockchain to Deploy To</li> </ol> <ul dir="auto"> <li>Local Ganache Chain <ul dir="auto"> <li><a href="https://www.trufflesuite.com/ganache" rel="nofollow">Ganache UI</a></li> <li><a href="https://github.com/trufflesuite/ganache-cli">Ganache Command Line</a></li> </ul> </li> </ul> </li> <li><a href="https://web3py.readthedocs.io/en/stable/" rel="nofollow">Web3.py</a></li> <li>HTTP / RPC Provider</li> <li>Private Keys MUST start with "0x"</li> <li>Contract Object</li> <li>Building a Transaction</li> <li>Account Nonce</li> <li>Calling "Constructor"</li> <li>Transaction Parameters</li> <li>Signing the Transaction</li> <li>NEVER put your private key directly in your code</li> <li><a href="https://www.twilio.com/blog/2017/01/how-to-set-environment-variables.html" rel="nofollow">Setting Environment Variables (Windows, Linux, MacOS)</a> <ul dir="auto"> <li><a href="https://www.youtube.com/watch?v=tqWDiu8a4gc&t=40s" rel="nofollow">More on Windows Environment Variables</a></li> </ul> </li> <li>Exported Environment Variables Only Last the Duration of the Shell/Terminal</li> <li>Private Key PSA</li> <li>.env file</li> <li>.gitignore</li> <li>Loading .env File in Python <ul dir="auto"> <li><a href="https://pypi.org/project/python-dotenv/" rel="nofollow">python-dotenv</a></li> </ul> </li> <li>Viewing our Transaction / Deployment in Ganache</li> <li>Waiting for Block Confirmations</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Interacting with Our Contract in Python & Web3.py</h3><a id="user-content-interacting-with-our-contract-in-python--web3py" class="anchor" aria-label="Permalink: Interacting with Our Contract in Python & Web3.py" href="#interacting-with-our-contract-in-python--web3py"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>2 Things you always need <ol dir="auto"> <li>Contract Address</li> <li>Contract ABI</li> </ol> </li> <li>Getting address from transaction receipt</li> <li>Calling a view function with web3.py <ul dir="auto"> <li>Call vs Transact</li> </ul> </li> <li>Updating State with Web3.py</li> <li><a href="https://github.com/trufflesuite/ganache-cli">ganache-cli</a> <ul dir="auto"> <li>Installing Ganache <ul dir="auto"> <li><a href="https://nodejs.org/en/" rel="nofollow">Install Nodejs</a></li> <li><a href="https://classic.yarnpkg.com/en/docs/install" rel="nofollow">Install Yarn</a></li> </ul> </li> </ul> </li> <li>Working with ganache-cli</li> <li>Open a new terminal in the same window</li> <li>Deploying to a testnet</li> <li><a href="https://infura.io/" rel="nofollow">Infura</a></li> <li><a href="https://www.alchemy.com/" rel="nofollow">Alchemy</a></li> <li>Using Infura RPC URL / HTTP Provider</li> <li><a href="https://chainlist.org/" rel="nofollow">Chain Ids</a></li> <li>Wow this seems like a lot of work... Is there a better way?</li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 5: <a href="https://github.com/PatrickAlphaC/brownie_simple_storage">Brownie Simple Storage</a></h1><a id="user-content-lesson-5-brownie-simple-storage" class="anchor" aria-label="Permalink: Lesson 5: Brownie Simple Storage" href="#lesson-5-brownie-simple-storage"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/brownie_simple_storage">https://github.com/PatrickAlphaC/brownie_simple_storage</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Brownie Introduction</h3><a id="user-content-brownie-introduction" class="anchor" aria-label="Permalink: Brownie Introduction" href="#brownie-introduction"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Some Users: <ul dir="auto"> <li><a href="https://yearn.finance/" rel="nofollow">https://yearn.finance/</a></li> <li><a href="https://curve.fi/" rel="nofollow">https://curve.fi/</a></li> <li><a href="https://badger.finance/" rel="nofollow">https://badger.finance/</a></li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Installing Brownie</h3><a id="user-content-installing-brownie" class="anchor" aria-label="Permalink: Installing Brownie" href="#installing-brownie"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://eth-brownie.readthedocs.io/en/stable/install.html" rel="nofollow">Installing Brownie</a> <ul dir="auto"> <li>Install pipx</li> <li>pipx install eth-brownie</li> <li>Testing Successful Install</li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Brownie Simple Storage Project</h3><a id="user-content-brownie-simple-storage-project" class="anchor" aria-label="Permalink: Brownie Simple Storage Project" href="#brownie-simple-storage-project"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>A new Brownie project with <code>brownie init</code> <ul dir="auto"> <li>Project Basic Explanation</li> </ul> </li> <li>Adding <code>SimpleStorage.sol</code> to the <code>contracts</code> folder</li> <li>Compiling with <code>brownie compile</code></li> <li>Brownie deploy script <ul dir="auto"> <li><code>def main</code> is brownie's entry point</li> </ul> </li> <li>brownie defaults to a <code>development</code> <code>ganache</code> chain that it creates</li> <li>Placing functions outside of the <code>main</code> function</li> <li>brownie <code>accounts</code> <ul dir="auto"> <li>3 Ways to Add Accounts <ol dir="auto"> <li><code>accounts[0]</code>: Brownie's "default" ganache accounts <ul dir="auto"> <li>Only works for local ganache</li> </ul> </li> <li><code>accounts.load("...")</code>: Brownie's encrypted command line (MOST SECURE) <ul dir="auto"> <li>Run <code>brownie accounts new <name></code> and enter your private key and a password</li> </ul> </li> <li><code>accounts.add(config["wallets"]["from_key"])</code>: Storing Private Keys as an environment variable, and pulling from our <code>brownie-config.yaml</code> <ul dir="auto"> <li>You'll need to add <code>dotenv: .env</code> to your <code>brownie-config.yaml</code> and have a <code>.env</code> file</li> </ul> </li> </ol> </li> </ul> </li> <li>Importing a Contract</li> <li>Contract.Deploy</li> <li>View Function Call in Brownie</li> <li>State-Changing Function Call in Brownie / Contract Interaction</li> <li><code>transaction.wait(1)</code></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Testing Basics</h3><a id="user-content-testing-basics" class="anchor" aria-label="Permalink: Testing Basics" href="#testing-basics"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>test_simple_storage.py</code></li> <li>Arrange, Act, Assert</li> <li><a href="https://docs.pytest.org/en/6.2.x/assert.html" rel="nofollow"><code>assert</code></a></li> <li><code>brownie test</code></li> <li><code>test_updating_storage</code></li> <li><a href="https://docs.pytest.org/en/6.2.x/" rel="nofollow">Pytest / Brownie Test Tips</a></li> <li>Deploy to a Testnet</li> <li><code>brownie networks list</code></li> <li>Development vs Ethereum <ul dir="auto"> <li>Development is temporary</li> <li>Ethereum networks persist</li> </ul> </li> <li>RPC URL / HTTP Provider in Brownie</li> <li>The network flag <ul dir="auto"> <li><code>list index out of range</code></li> </ul> </li> <li><code>get_account()</code></li> <li><code>networks.show_active()</code></li> <li>build/deployments</li> <li>Accessing previous deployments</li> <li>Interacting with contracts deployed in our brownie project</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">[Brownie console]</h3><a id="user-content-brownie-console" class="anchor" aria-label="Permalink: [Brownie console]" href="#brownie-console"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>brownie console</code></li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 6: <a href="https://github.com/PatrickAlphaC/brownie_fund_me">Brownie Fund Me</a></h1><a id="user-content-lesson-6-brownie-fund-me" class="anchor" aria-label="Permalink: Lesson 6: Brownie Fund Me" href="#lesson-6-brownie-fund-me"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/brownie_fund_me">https://github.com/PatrickAlphaC/brownie_fund_me</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Introduction</h3><a id="user-content-introduction" class="anchor" aria-label="Permalink: Introduction" href="#introduction"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Setup</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Dependencies, Deploying, and Networks</h3><a id="user-content-dependencies-deploying-and-networks" class="anchor" aria-label="Permalink: Dependencies, Deploying, and Networks" href="#dependencies-deploying-and-networks"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Dependencies</li> <li><a href="https://github.com/smartcontractkit/chainlink-brownie-contracts">chainlink-brownie-contracts</a></li> <li>remappings</li> <li>Deploy Script (V1)</li> <li><code>helpful_scripts.py</code></li> <li><code>__init__.py</code></li> <li>Deploy to Rinkeby</li> <li>Contract Verification (<code>publish_source</code>) <ul dir="auto"> <li>The Manual Way <ul dir="auto"> <li>"Flattening"</li> </ul> </li> <li>The Programmatic Way <ul dir="auto"> <li>Getting an <a href="https://etherscan.io/apis" rel="nofollow">Etherscan API Key</a></li> <li><code>ETHERSCAN_TOKEN</code></li> </ul> </li> <li>Interacting with Etherscan</li> </ul> </li> <li>Deploying to Local Chains</li> <li>Introduction to Mocking</li> <li>Constructor Parameters</li> <li><code>networks</code> in our <code>brownie-config.yaml</code></li> <li>Copying <a href="https://github.com/smartcontractkit/chainlink-mix">Mock Contracts from chainlink-mix</a></li> <li>Deploying and using our mock</li> <li>Refactoring</li> <li>Deploying to a persistent ganache</li> <li>brownie attach</li> <li>Adding a persistent brownie network</li> <li>resetting a network build</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Funding and Withdrawing Python Scripts</h3><a id="user-content-funding-and-withdrawing-python-scripts" class="anchor" aria-label="Permalink: Funding and Withdrawing Python Scripts" href="#funding-and-withdrawing-python-scripts"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Whoops! Let's fix an issue...</li> <li>Fund Script</li> <li>Withdraw Script</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Testing across networks</h3><a id="user-content-testing-across-networks" class="anchor" aria-label="Permalink: Testing across networks" href="#testing-across-networks"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>test_can_fund_and_withdraw</code></li> <li>default networks</li> <li>pytest <code>pip install pytest</code></li> <li>pytest.skip</li> <li>brownie exceptions</li> <li><code>mainnet-fork</code></li> <li>Custom mainnet fork</li> <li>Adding a development brownie network <ul dir="auto"> <li><code>brownie networks add development mainnet-fork-dev cmd=ganache-cli host=http://127.0.0.1 fork='https://infura.io/v3/$WEB3_INFURA_PROJECT_ID' accounts=10 mnemonic=brownie port=8545</code></li> </ul> </li> <li><a href="https://www.alchemy.com/" rel="nofollow">Alchemy</a></li> <li><code>brownie test --network mainnet-fork</code></li> <li>brownie ganache vs local ganache vs mainnet-fork vs testnet...</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Git</h3><a id="user-content-git" class="anchor" aria-label="Permalink: Git" href="#git"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://git-scm.com/book/en/v2/Getting-Started-Installing-Git" rel="nofollow">Installing Git</a></li> <li>Creating a repository</li> <li><a href="https://git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup" rel="nofollow">First time with git</a></li> <li><a href="https://docs.github.com/en/github/importing-your-projects-to-github/importing-source-code-to-github/adding-an-existing-project-to-github-using-the-command-line">Adding our project to github</a></li> <li>Tweet it out!</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Compatibility with Ganache UI</h3><a id="user-content-compatibility-with-ganache-ui" class="anchor" aria-label="Permalink: Compatibility with Ganache UI" href="#compatibility-with-ganache-ui"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>test_only_owner_can_withdraw()</code> gives below error if the selected network is Ganache UI::</li> </ul> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="E ValueError: Execution reverted during call: 'VM Exception while processing transaction: revert'. This transaction will likely revert. If you wish to broadcast, include `allow_revert:True` as a transaction parameter."><pre class="notranslate"><code>E ValueError: Execution reverted during call: 'VM Exception while processing transaction: revert'. This transaction will likely revert. If you wish to broadcast, include `allow_revert:True` as a transaction parameter. </code></pre></div> <p dir="auto"><a href="https://ethereum.stackexchange.com/questions/114889/deploying-ganache-local-w-brownie-vm-exception-while-processing-transaction-in" rel="nofollow">More information here.</a></p> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 7: <a href="https://github.com/PatrickAlphaC/smartcontract-lottery">SmartContract Lottery</a></h1><a id="user-content-lesson-7-smartcontract-lottery" class="anchor" aria-label="Permalink: Lesson 7: SmartContract Lottery" href="#lesson-7-smartcontract-lottery"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/smartcontract-lottery">https://github.com/PatrickAlphaC/smartcontract-lottery</a></p> <p dir="auto"><a href="https://docs.chain.link/vrf/v1/examples/get-a-random-number" rel="nofollow">Chainlink VRF v1 docs</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Introduction</h3><a id="user-content-introduction-1" class="anchor" aria-label="Permalink: Introduction" href="#introduction-1"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Add a <code>README.md</code></li> <li>Defining the project</li> <li>Is it decentralized?</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Lottery.sol</code></h3><a id="user-content-lotterysol" class="anchor" aria-label="Permalink: Lottery.sol" href="#lotterysol"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>basic setup</li> <li>Main Functions</li> <li>address payable[]</li> <li>getEntranceFee & Setup <ul dir="auto"> <li><a href="https://docs.chain.link/docs/get-the-latest-price/" rel="nofollow">Chainlink Price Feed</a></li> <li>brownie-config</li> <li>SPDX</li> </ul> </li> <li>Matching Units of Measure <ul dir="auto"> <li>Can't just divide</li> </ul> </li> <li>Test early and often</li> <li>Quick Math Sanity Check</li> <li>deleting networks</li> <li><a href="https://www.alchemy.com/" rel="nofollow">Alchemy</a> again</li> <li>Enum</li> <li><code>startLottery</code></li> <li><a href="https://openzeppelin.com/contracts/" rel="nofollow">Openzeppelin</a>... Is this the first openzeppelin reference?</li> <li><a href="https://github.com/OpenZeppelin/openzeppelin-contracts">Openzeppelin Contracts Github</a></li> <li>Randomness</li> <li>Pseudorandomness</li> <li><code>block</code> keyword <ul dir="auto"> <li><code>block.difficulty</code></li> <li><code>block.timestamp</code></li> </ul> </li> <li><code>keccack256</code></li> <li><a href="https://docs.chain.link/docs/get-a-random-number/" rel="nofollow">True Randomness with Chainlink VRF</a></li> <li><a href="https://github.com/smartcontractkit/chainlink/blob/develop/contracts/src/v0.8/vrf/VRFConsumerBase.sol">VRFConsumerBase.sol</a></li> <li>Chainlink VRF Remix Version</li> <li>Inheriting Constructors</li> <li>Oracle Gas & Transaction Gas</li> <li><a href="https://ethereum.stackexchange.com/questions/87473/is-chainlinks-price-reference-data-free-to-consume" rel="nofollow">Why didn't we pay gas on the price feeds?</a></li> <li>Chainlink Node Fees</li> <li><a href="https://docs.chain.link/docs/architecture-request-model/" rel="nofollow">Request And Receive Introduction</a></li> <li><a href="https://docs.chain.link/docs/link-token-contracts/#kovan" rel="nofollow">Kovan Faucets</a></li> <li>Funding Chainlink Contracts</li> <li><a href="https://docs.chain.link/docs/architecture-request-model/" rel="nofollow">Request And Receive Explanation</a></li> <li>A Clarification</li> <li><code>endLottery</code></li> <li><code>returns (type variableName)</code></li> <li><code>fulfillRandomness</code></li> <li><code>override</code></li> <li>Modulo Operation (Mod Operation %)</li> <li>Paying the lottery winner</li> <li>Resetting the lottery</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Testing Lottery.sol</h3><a id="user-content-testing-lotterysol" class="anchor" aria-label="Permalink: Testing Lottery.sol" href="#testing-lotterysol"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>deploy_lottery.py</code></li> <li><code>get_account()</code> refactored</li> <li><code>get_contract</code> <ul dir="auto"> <li><code>contract_to_mock</code></li> <li><code>Contract.from_abi</code></li> </ul> </li> <li>Adding the parameters to deploying to lottery</li> <li><code>vrfCoordinatorMock</code> and adding mocks</li> <li><code>LinkToken</code> and Mocks</li> <li>Successful Ganache Deployment!</li> <li>Python Lottery Scripts/Functions <ul dir="auto"> <li><code>start_lottery</code></li> <li>Brownie tip: Remember to <code>tx.wait(1)</code> your last transaction</li> <li><code>enter_lottery</code></li> <li><code>end_lottery</code></li> </ul> </li> <li>Funding with LINK</li> <li>brownie interfaces</li> <li>Waiting for callback</li> <li>Integration Tests & Unit Tests</li> <li>Test all lines of code</li> <li><code>test_get_entrance_fee</code></li> <li><code>pytest.skip</code> (again)</li> <li><code>test_cant_enter_unless_started</code></li> <li><code>test_can_start_and_enter_lottery</code></li> <li><code>test_can_pick_winner_correctly</code></li> <li>Events and Logs</li> <li><code>callBackWithRandomness</code></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Lottery.sol Testnet Deployment</h3><a id="user-content-lotterysol-testnet-deployment" class="anchor" aria-label="Permalink: Lottery.sol Testnet Deployment" href="#lotterysol-testnet-deployment"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>topics</code></li> <li><a href="https://stackoverflow.com/questions/34466027/in-pytest-what-is-the-use-of-conftest-py-files" rel="nofollow">conftest.py</a></li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 8: <a href="https://github.com/smartcontractkit/chainlink-mix">Chainlink Mix</a></h1><a id="user-content-lesson-8-chainlink-mix" class="anchor" aria-label="Permalink: Lesson 8: Chainlink Mix" href="#lesson-8-chainlink-mix"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/smartcontractkit/chainlink-mix">https://github.com/smartcontractkit/chainlink-mix</a></p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto"><a href="https://github.com/brownie-mix">Brownie Mixes</a></h2><a id="user-content-brownie-mixes" class="anchor" aria-label="Permalink: Brownie Mixes" href="#brownie-mixes"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 9: <a href="https://github.com/PatrickAlphaC/erc20-brownie-py">ERC20s, EIPs, and Token Standards</a></h1><a id="user-content-lesson-9-erc20s-eips-and-token-standards" class="anchor" aria-label="Permalink: Lesson 9: ERC20s, EIPs, and Token Standards" href="#lesson-9-erc20s-eips-and-token-standards"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/erc20-brownie-py">https://github.com/PatrickAlphaC/erc20-brownie-py</a></p> <ul dir="auto"> <li><a href="https://eips.ethereum.org/EIPS/eip-20" rel="nofollow">ERC20/EIP20 Standard</a></li> <li>What is an ERC20?</li> <li>Creating an ERC20</li> <li><a href="https://docs.openzeppelin.com/contracts/2.x/api/token/erc20" rel="nofollow">OpenZeppelin ERC20</a></li> <li><a href="https://docs.soliditylang.org/en/breaking/080-breaking-changes.html" rel="nofollow">Solidity 0.8</a></li> <li>I Challenge you to code this yourself!</li> <li><code>deploy_token.py</code></li> <li>Copy paste <code>helpful_scripts.py</code></li> <li>Viewing our token in metamask</li> <li>Adding to an exchange</li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 10: <a href="https://github.com/PatrickAlphaC/aave_brownie_py_freecode">Defi & Aave</a></h1><a id="user-content-lesson-10-defi--aave" class="anchor" aria-label="Permalink: Lesson 10: Defi & Aave" href="#lesson-10-defi--aave"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">*NOTE: This repo is now archived as kovan is no longer supported. You can still follow along with the learning, but know the code may not work the same on a different testnet.</p> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/aave_brownie_py_freecode">https://github.com/PatrickAlphaC/aave_brownie_py_freecode</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Defi Intro</h3><a id="user-content-defi-intro" class="anchor" aria-label="Permalink: Defi Intro" href="#defi-intro"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://defipulse.com/" rel="nofollow">Defipulse</a></li> <li><a href="https://defillama.com/" rel="nofollow">Defillama</a></li> <li><a href="https://staging.aave.com/" rel="nofollow">Aave Testnet Site</a></li> <li><a href="https://paraswap.io/" rel="nofollow">Paraswap</a></li> <li>Decentralized Exchange</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Aave UI</h3><a id="user-content-aave-ui" class="anchor" aria-label="Permalink: Aave UI" href="#aave-ui"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://docs.chain.link/docs/link-token-contracts/#kovan" rel="nofollow">Kovan ETH</a></li> <li>What is Aave?</li> <li>Borrowing and Lending</li> <li>Connecting to Aave</li> <li>Depositing Tokens / Lending</li> <li>Checking your transaction is correct</li> <li>WETH Gateway</li> <li>Interest Bearing Token (aToken)</li> <li>Collateral</li> <li><a href="https://makerdao.com/en/" rel="nofollow">DAI</a></li> <li><a href="https://www.investopedia.com/terms/s/stablecoin.asp" rel="nofollow">Stablecoin</a></li> <li><a href="https://www.gemini.com/cryptopedia/wrapped-bitcoin-what-can-you-do" rel="nofollow">Wrapped Bitcoin (wBTC)</a></li> <li><a href="https://docs.aave.com/faq/borrowing" rel="nofollow">Why borrow tokens?</a></li> <li><a href="https://blog.chain.link/blockchain-fintech-defi-tutorial-lending-borrowing-python/" rel="nofollow">Blockchain Fintech Tutorial</a></li> <li>DISCLAIMER ABOUT BORROWING</li> <li>Borrowing Tokens</li> <li><a href="https://docs.aave.com/faq/liquidations" rel="nofollow">Liquidations</a></li> <li>Your health factor must be above 1</li> <li><a href="https://www.investopedia.com/terms/s/solvency.asp" rel="nofollow">Solvent</a></li> <li><a href="https://docs.aave.com/faq/borrowing#what-is-the-difference-between-stable-and-variable-rate" rel="nofollow">Stable vs Variable Interest Rate</a></li> <li>Repaying our borrows/loans</li> <li>Reward token / governance token</li> <li>Governance</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><a href="https://github.com/PatrickAlphaC/aave_brownie_py_freecode">Programmatic Interactions with Aave</a></h3><a id="user-content-programmatic-interactions-with-aave" class="anchor" aria-label="Permalink: Programmatic Interactions with Aave" href="#programmatic-interactions-with-aave"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Quant Defi Engineer</li> <li><a href="https://docs.aave.com/developers/" rel="nofollow">Aave Documentation</a></li> <li>Setup</li> <li>Converting ETH -> WETH</li> <li><code>get_weth.py</code></li> <li><a href="https://github.com/PatrickAlphaC/aave_brownie_py/blob/main/interfaces/WethInterface.sol">IWETH</a></li> <li><a href="https://kovan.etherscan.io/token/0xd0a1e359811322d97991e03f863a0c30c2cf029c" rel="nofollow">Kovan WETH Token Address: 0xd0a1e359811322d97991e03f863a0c30c2cf029c</a></li> <li><a href="https://etherscan.io/token/0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2" rel="nofollow">Mainnet WETH Token Address: 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2</a></li> <li>Converting WETH -> ETH with <code>withdraw</code></li> <li><code>aave_borrow.py</code></li> <li><a href="https://docs.aave.com/developers/the-core-protocol/lendingpool" rel="nofollow">LendingPool</a></li> <li><a href="https://docs.aave.com/developers/the-core-protocol/addresses-provider" rel="nofollow">LendingPoolAddressProvider</a></li> <li><a href="https://docs.aave.com/developers/deployed-contracts/deployed-contracts" rel="nofollow">LendingPool and LendingPoolAddressProvider Addresses</a></li> <li>Fixing import dependencies</li> <li><a href="https://github.com/aave/protocol-v2">Aave Github</a></li> <li><a href="https://medium.com/ethex-market/erc20-approve-allow-explained-88d6de921ce9" rel="nofollow">ERC20 Approve Function</a></li> <li><a href="https://github.com/PatrickAlphaC/aave_brownie_py/blob/main/interfaces/IERC20.sol">IERC20 from Patrick's repo</a></li> <li><code>deposit</code></li> <li><a href="https://docs.aave.com/developers/the-core-protocol/lendingpool#getuseraccountdata" rel="nofollow">getUserAccountData</a></li> <li>Liquidation Threshold</li> <li><a href="https://docs.aave.com/risk/asset-risk/risk-parameters" rel="nofollow">Risk Parameters</a></li> <li>Borrowing DAI</li> <li>Getting DAI Conversion Rate <ul dir="auto"> <li><a href="https://docs.chain.link/docs/reference-contracts/" rel="nofollow">Chainlink Price Feeds</a></li> <li><a href="https://github.com/PatrickAlphaC/aave_brownie_py/blob/main/interfaces/AggregatorV3Interface.sol">AggregatorV3Interface</a></li> </ul> </li> <li><a href="https://docs.aave.com/developers/the-core-protocol/lendingpool#borrow" rel="nofollow">borrow</a></li> <li><a href="https://etherscan.io/token/0x6b175474e89094c44da98b954eedeac495271d0f" rel="nofollow">Mainnet DAI Address: 0x6b175474e89094c44da98b954eedeac495271d0f</a></li> <li><a href="https://aave.github.io/aave-addresses/kovan.json" rel="nofollow">Aave Testnet Token Addresses</a></li> <li>Repaying</li> <li>Kovan Run</li> <li>Viewing the transactions</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Testing</h3><a id="user-content-testing" class="anchor" aria-label="Permalink: Testing" href="#testing"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 11: <a href="https://github.com/PatrickAlphaC/nft-demo">NFTs</a></h1><a id="user-content-lesson-11-nfts" class="anchor" aria-label="Permalink: Lesson 11: NFTs" href="#lesson-11-nfts"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/nft-demo">https://github.com/PatrickAlphaC/nft-demo</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Non-Technical Explainer</h3><a id="user-content-non-technical-explainer" class="anchor" aria-label="Permalink: Non-Technical Explainer" href="#non-technical-explainer"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://www.freecodecamp.org/news/how-to-make-an-nft-and-render-on-opensea-marketplace/" rel="nofollow">End-to-end article</a></li> <li>What is an NFT?</li> <li><a href="https://eips.ethereum.org/EIPS/eip-721" rel="nofollow">ERC721</a></li> <li>Token URI</li> <li><a href="https://docs.opensea.io/docs/2-adding-metadata" rel="nofollow">Token Metadata Example</a></li> <li><a href="https://ipfs.io/" rel="nofollow">IPFS</a></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Simple NFT</h3><a id="user-content-simple-nft" class="anchor" aria-label="Permalink: Simple NFT" href="#simple-nft"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://github.com/PatrickAlphaC/nft-mix">brownie mix</a></li> <li>Initial Setup</li> <li><code>SimpleCollectible.sol</code></li> <li><a href="https://docs.openzeppelin.com/contracts/3.x/" rel="nofollow">OpenZeppelin ERC721</a></li> <li><a href="https://github.com/PatrickAlphaC/nft-mix/blob/main/img/pug.png">Pug Image</a></li> <li>NFT Constructor</li> <li>NFT is a type of factory pattern</li> <li><code>createCollectible</code> <ul dir="auto"> <li><code>_safeMint</code></li> </ul> </li> <li>TokenURI & Metadata</li> <li>Opensea listing example</li> <li>Is this decentralized?</li> <li>Ethereum Size and dStorage <ul dir="auto"> <li><a href="https://ycharts.com/indicators/ethereum_chain_full_sync_data_size" rel="nofollow">Ethereum Size</a></li> <li><a href="https://ethereum.org/en/developers/docs/storage/" rel="nofollow">dStorage Solutions</a></li> <li><a href="https://www.ipfs.com/" rel="nofollow">IPFS</a></li> </ul> </li> <li>You need to have your NFT attributes both on-chain and inside your tokenURI metadata</li> <li><code>deploy_and_create.py</code></li> <li><a href="https://ipfs.io/ipfs/Qmd9MCGtdVz2miNumBHDbvj8bigSgTwnr4SbyH6DNnpWdt?filename=0-PUG.json" rel="nofollow">TokenURI used for the demo: https://ipfs.io/ipfs/Qmd9MCGtdVz2miNumBHDbvj8bigSgTwnr4SbyH6DNnpWdt?filename=0-PUG.json</a></li> <li><a href="https://chrome.google.com/webstore/detail/ipfs-companion/nibjojkomfdiaoajekhjakgkdhaomnch?hl=en" rel="nofollow">IPFS Companion</a></li> <li>Rinkeby Deployment</li> <li><a href="https://testnets.opensea.io/assets/0x8acb7ca932892eb83e4411b59309d44dddbc4cdf/0" rel="nofollow">Opensea Example</a></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">SimpleCollectible Testing</h3><a id="user-content-simplecollectible-testing" class="anchor" aria-label="Permalink: SimpleCollectible Testing" href="#simplecollectible-testing"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>What else with NFTs?</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Advanced NFT</h3><a id="user-content-advanced-nft" class="anchor" aria-label="Permalink: Advanced NFT" href="#advanced-nft"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>AdvancedCollectible.sol</code></li> <li><a href="https://github.com/PatrickAlphaC/dungeons-and-dragons-nft">Dungeons and Dragons Example</a></li> <li>Double Inherited Constructors</li> <li><code>createCollectible</code> (Advanced) <ul dir="auto"> <li><code>tokenIdToBreed</code></li> </ul> </li> <li>Working with in-flight Chainlink VRF requests</li> <li>Download the NFT images from the <a href="https://github.com/PatrickAlphaC/nft-mix">nft-mix</a></li> <li><code>setTokenURI</code> <ul dir="auto"> <li><code>_isApprovedOrOwner</code></li> </ul> </li> <li>Emit events when you update mappings</li> <li><a href="https://ethereum.stackexchange.com/questions/8658/what-does-the-indexed-keyword-do/8659" rel="nofollow"><code>indexed</code> event keyword</a></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Advanced deploy_and_create</h3><a id="user-content-advanced-deploy_and_create" class="anchor" aria-label="Permalink: Advanced deploy_and_create" href="#advanced-deploy_and_create"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Move <code>OPENSEA_URL</code> to <code>helpful_scripts</code></li> <li>Deploying AdvancedCollectible <ul dir="auto"> <li>Opensea testnet is only compatible with Rinkeby</li> </ul> </li> <li><a href="https://docs.chain.link/docs/vrf-contracts/#rinkeby" rel="nofollow">Rinkeby Chainlink VRF Contract Addresses</a></li> <li>Speeding through adding functions from previous projects</li> <li>Deploy to Rinkeby</li> <li><code>create_collectible.py</code></li> <li>A quick unit test</li> <li>A quick integration test</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Creating Metadata & IPFS</h3><a id="user-content-creating-metadata--ipfs" class="anchor" aria-label="Permalink: Creating Metadata & IPFS" href="#creating-metadata--ipfs"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>create_metadata.py</code></li> <li><code>get_breed</code></li> <li>Metadata Folder</li> <li><code>metadata_template</code></li> <li>NFT Metadata Attributes</li> <li>Checking if Metadata file already exists</li> <li>Uploading to IPFS <ul dir="auto"> <li><code>upload_to_ipfs</code></li> <li><a href="https://docs.ipfs.io/install/command-line/" rel="nofollow">Download IPFS Command Line</a></li> <li><a href="https://docs.ipfs.io/install/ipfs-desktop/" rel="nofollow">Download IPFS Desktop</a></li> <li><a href="https://docs.ipfs.io/reference/http/api/" rel="nofollow">HTTP IPFS Docs</a></li> <li><code>ipfs daemon</code></li> <li><a href="https://app.pinata.cloud/" rel="nofollow">Pinata</a></li> <li><a href="https://docs.pinata.cloud/" rel="nofollow">Pinata Docs</a></li> <li>Refactoring to not re-upload to IPFS</li> </ul> </li> <li>Setting the TokenURI</li> <li>End-To-End Manual Testnet Test</li> <li>Viewing on Opensea</li> </ul> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Lesson 12: <a href="https://github.com/PatrickAlphaC/upgrades-mix">Upgrades</a></h1><a id="user-content-lesson-12-upgrades" class="anchor" aria-label="Permalink: Lesson 12: Upgrades" href="#lesson-12-upgrades"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/upgrades-mix">https://github.com/PatrickAlphaC/upgrades-mix</a></p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Introduction to upgrading smart contracts</h3><a id="user-content-introduction-to-upgrading-smart-contracts" class="anchor" aria-label="Permalink: Introduction to upgrading smart contracts" href="#introduction-to-upgrading-smart-contracts"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://www.youtube.com/watch?v=bdXJmWajZRY" rel="nofollow">Original Video</a></li> <li>Smart Contracts can be upgraded!</li> <li>Does this mean they are not immutable?</li> <li><a href="https://blog.trailofbits.com/2018/09/05/contract-upgrade-anti-patterns/" rel="nofollow">Trail of Bits on Upgradeable Smart Contracts</a></li> <li>The "Not Really Upgrading" / Parameterization Method</li> <li>The Social Yeet / Migration Method</li> <li><a href="https://blog.trailofbits.com/2018/10/29/how-contract-migration-works/" rel="nofollow">Contract Migration</a></li> <li>Proxies <ul dir="auto"> <li>DelegateCall</li> <li>Terminology: <ul dir="auto"> <li>Implementation Contract</li> <li>Proxy Contract</li> <li>User</li> <li>Admin</li> </ul> </li> <li>Gotchas: <ul dir="auto"> <li>Storage Clashes</li> <li>Function Selector</li> <li>Function Selector Clashes</li> </ul> </li> <li>Proxy Patterns: <ul dir="auto"> <li><a href="https://blog.openzeppelin.com/the-transparent-proxy-pattern/" rel="nofollow">Transparent Proxy Pattern</a></li> <li><a href="https://eips.ethereum.org/EIPS/eip-1822" rel="nofollow">Universal Upgrade Proxy Standard</a></li> <li><a href="https://eips.ethereum.org/EIPS/eip-2535" rel="nofollow">Diamond/Multi-Facet Proxy</a></li> </ul> </li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Upgrades-mix and code</h3><a id="user-content-upgrades-mix-and-code" class="anchor" aria-label="Permalink: Upgrades-mix and code" href="#upgrades-mix-and-code"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Setup</li> <li><code>Box.sol</code></li> <li><code>BoxV2.sol</code></li> <li>Getting the proxy contracts</li> <li><a href="https://github.com/OpenZeppelin/openzeppelin-contracts/tree/master/contracts/proxy/transparent">Openzeppelin Proxy Github</a></li> <li><code>01_deploy_box.py</code></li> <li>Hooking up a proxy to our implementation contract</li> <li>(Optional) <a href="https://help.gnosis-safe.io/en/articles/3876461-create-a-safe" rel="nofollow">Creating a Gnosis Safe</a></li> <li>Initializers</li> <li>Encoding Initializer Function</li> <li>Assigning ABI to a proxy</li> <li>Running the script</li> <li>Upgrade Python Function</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Testing Upgrades</h3><a id="user-content-testing-upgrades" class="anchor" aria-label="Permalink: Testing Upgrades" href="#testing-upgrades"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Testing our proxy</li> <li>Testing our upgrades</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Upgrades on a testnet</h3><a id="user-content-upgrades-on-a-testnet" class="anchor" aria-label="Permalink: Upgrades on a testnet" href="#upgrades-on-a-testnet"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Bonus Lesson 13: <a href="https://github.com/PatrickAlphaC/defi-stake-yield-brownie-freecode">Full Stack Defi</a></h1><a id="user-content-bonus-lesson-13-full-stack-defi" class="anchor" aria-label="Permalink: Bonus Lesson 13: Full Stack Defi" href="#bonus-lesson-13-full-stack-defi"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><em>Note: This section is archived as kovan is now deprecated. If you're looking to learn more Full-stack, check out the full stack portions of the hardhat/javascript video.</em></p> <p dir="auto"><em>Link to hardhat/javascript video with more full-stack examples: <a href="https://github.com/smartcontractkit/full-blockchain-solidity-course-js">https://github.com/smartcontractkit/full-blockchain-solidity-course-js</a></em></p> <p dir="auto">💻 Code: <a href="https://github.com/PatrickAlphaC/defi-stake-yield-brownie-freecode">https://github.com/PatrickAlphaC/defi-stake-yield-brownie-freecode</a></p> <ul dir="auto"> <li><a href="https://www.freecodecamp.org/news/tag/react/" rel="nofollow">FreeCodeCamp React</a></li> <li>What are we building?</li> <li>Setup</li> <li><code>DappToken.sol</code></li> <li><code>TokenFarm.sol</code> <ul dir="auto"> <li><code>tokenIsAllowed</code></li> <li><code>addAllowedTokens</code></li> <li>mapping of a mapping</li> <li><code>stakeTokens</code></li> <li><code>issueTokens</code></li> <li><code>getUserTotalValue</code></li> <li><code>getUserSingleTokenValue</code></li> <li><code>getTokenValue</code></li> <li><code>setPriceFeedContract</code></li> <li><code>unStakeTokens</code></li> <li>Can this be reentrancy attacked?</li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Defi Stake Yield Brownie Scripts & Tests</h3><a id="user-content-defi-stake-yield-brownie-scripts--tests" class="anchor" aria-label="Permalink: Defi Stake Yield Brownie Scripts & Tests" href="#defi-stake-yield-brownie-scripts--tests"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>deploy.py</code> <ul dir="auto"> <li>Deploying DappToken</li> <li>Deploying TokenFarm</li> <li>Adding allowed tokens</li> </ul> </li> <li><a href="https://erc20faucet.com/" rel="nofollow">ERC20 Kovan Faucet</a> <ul dir="auto"> <li>If the link above does not work, you can get another ERC20 token using this faucet: <a href="https://github.com/bokkypoobah/WeenusTokenFaucet">Weenus ERC20 Faucet</a></li> </ul> </li> <li>Mocking our ERC20s</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Testing our Defi Stake Yield Brownie Dapp</h3><a id="user-content-testing-our-defi-stake-yield-brownie-dapp" class="anchor" aria-label="Permalink: Testing our Defi Stake Yield Brownie Dapp" href="#testing-our-defi-stake-yield-brownie-dapp"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>test_set_price_feed_contract</code></li> <li><code>test_stake_tokens</code></li> <li>Fixtures</li> <li><code>test_issue_tokens</code></li> <li>Now you try on tests!</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Front End / Full Stack</h3><a id="user-content-front-end--full-stack" class="anchor" aria-label="Permalink: Front End / Full Stack" href="#front-end--full-stack"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Front End Introduction</li> <li>Typescript</li> <li><a href="https://reactjs.org/" rel="nofollow">React</a></li> <li><a href="https://usedapp.readthedocs.io/en/latest/" rel="nofollow">useDapp</a></li> <li><a href="https://www.npmjs.com/package/npx" rel="nofollow">npx</a></li> <li><a href="https://classic.yarnpkg.com/en/docs/install/" rel="nofollow">yarn</a></li> <li><code>create-react-app</code> <ul dir="auto"> <li>Layout</li> </ul> </li> <li><a href="https://www.freecodecamp.org/news/testing-react-hooks/" rel="nofollow">Testing Front End</a></li> <li>yarn && yarn start</li> <li>Connecting our wallets <ul dir="auto"> <li>Install useDapp</li> <li>Header Component</li> <li>Connect Button</li> </ul> </li> <li><a href="https://material-ui.com/" rel="nofollow">Material-UI</a></li> <li>Making our button nicer</li> <li><code>Main.tsx</code> <ul dir="auto"> <li>Sending <code>brownie-config</code> & <code>build</code> folder to our UI</li> <li>Helper Config</li> <li>TypeScript error suppression</li> <li>Getting addresses</li> <li><a href="https://docs.ethers.io/v5/" rel="nofollow">Ethers</a></li> <li>Only support kovan</li> </ul> </li> <li><code>YourWallet</code> <ul dir="auto"> <li><code>supportedTokens</code></li> <li>State Hooks</li> <li>Showing tokens</li> <li><code>WalletBalance</code></li> <li><a href="https://www.npmjs.com/package/@ethersproject/units" rel="nofollow"><code>ethersproject/units</code></a></li> <li><code>BalanceMsg</code></li> <li>Stake Form</li> <li>Calling <code>approve</code></li> <li><code>useContractFunction</code></li> <li><code>useEffect</code></li> <li>Notifications</li> <li>Make it pretty</li> <li>Alerts</li> </ul> </li> </ul> <p dir="auto">Shoutout to <a href="https://twitter.com/mdurkin92" rel="nofollow">Matt</a> for the help on the front end!</p> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">Closing and Summary</h1><a id="user-content-closing-and-summary" class="anchor" aria-label="Permalink: Closing and Summary" href="#closing-and-summary"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Security</h2><a id="user-content-security" class="anchor" aria-label="Permalink: Security" href="#security"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://consensys.github.io/smart-contract-best-practices/" rel="nofollow">Best Practices</a></li> <li><a href="https://consensys.github.io/smart-contract-best-practices/attacks/" rel="nofollow">Attacks</a> <ul dir="auto"> <li><a href="https://hackernoon.com/how-dollar100m-got-stolen-from-defi-in-2021-price-oracle-manipulation-and-flash-loan-attacks-explained-3n6q33r1" rel="nofollow">Oracle Attacks</a></li> <li><a href="https://quantstamp.com/blog/what-is-a-re-entrancy-attack" rel="nofollow">Re-entrancy Attacks</a></li> </ul> </li> <li><a href="https://www.damnvulnerabledefi.xyz/" rel="nofollow">Damn Vulnerable Defi</a></li> <li><a href="https://ethernaut.openzeppelin.com/" rel="nofollow">Ethernaut</a></li> <li>Some Auditors <ul dir="auto"> <li><a href="https://openzeppelin.com/" rel="nofollow">OpenZeppelin</a></li> <li><a href="https://sigmaprime.io/" rel="nofollow">SigmaPrime</a></li> <li><a href="https://www.trailofbits.com/" rel="nofollow">Trail of Bits</a></li> </ul> </li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Where do I go now?</h2><a id="user-content-where-do-i-go-now" class="anchor" aria-label="Permalink: Where do I go now?" href="#where-do-i-go-now"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Learning More</h3><a id="user-content-learning-more" class="anchor" aria-label="Permalink: Learning More" href="#learning-more"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://cryptozombies.io/" rel="nofollow">CryptoZombies</a></li> <li><a href="https://www.youtube.com/channel/UCY0xL8V6NzzFcwzHCgB8orQ" rel="nofollow">Dapp University</a></li> <li><a href="https://www.chainshot.com/courses" rel="nofollow">ChainShot</a></li> <li><a href="https://academy.ivanontech.com/" rel="nofollow">Ivan on Tech</a></li> <li><a href="https://www.youtube.com/channel/UCZM8XQjNOyG2ElPpEUtNasA" rel="nofollow">Eat the Blocks</a></li> <li><a href="https://www.youtube.com/channel/UCn-3f8tw_E1jZvhuHatROwA" rel="nofollow">Patrick Collins</a></li> <li><a href="https://www.youtube.com/channel/UC_HI2i2peo1A-STdG22GFsA" rel="nofollow">Austin Griffith</a></li> <li><a href="https://www.youtube.com/user/boyindasouth" rel="nofollow">Nader Dabit</a></li> <li><a href="https://ethereum.org/en/" rel="nofollow">Ethereum.org</a></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Community</h3><a id="user-content-community" class="anchor" aria-label="Permalink: Community" href="#community"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 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4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://github.com/chalex-eth/From-solidity-course-to-vyper-py">From solidity course to vyper</a></p> <p dir="auto">And make today an amazing day!</p> </article></div></div></div></div></div> <!-- --> <!-- --> <script type="application/json" id="__PRIMER_DATA_:R0:__">{"resolvedServerColorMode":"day"}</script></div> </react-partial> <input type="hidden" data-csrf="true" value="5/HpCWlKqwD/O3UXYZJ5vzX4KVWSjNfvcxdoG3A+2fxjJFp8aIdhqkKOUjFibvnqkrt2IXz2O8ECIqcNhXdexg==" /> 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