Latest Typing topics - Discussions on Python.org

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content="https://discuss.python.org/c/typing/32" /> <meta name="twitter:url" content="https://discuss.python.org/c/typing/32" /> <meta property="og:title" content="Typing" /> <meta name="twitter:title" content="Typing" /> <meta property="og:description" content="Discussions involving typing in Python." /> <meta name="twitter:description" content="Discussions involving typing in Python." /> </head> <body class="crawler browser-update"> <header> <a href="/"> Discussions on Python.org </a> </header> <div id="main-outlet" class="wrap" role="main"> <h1> <a itemprop="item" href="/c/typing/32"> <span itemprop='name'>Typing</span> </a> </h1> <br/> <div class="topic-list-container" itemscope itemtype='http://schema.org/ItemList'> <meta itemprop='itemListOrder' content='http://schema.org/ItemListOrderDescending'> <table class='topic-list'> <thead> <tr> <th>Topic</th> <th></th> <th class="replies">Replies</th> <th class="views">Views</th> <th>Activity</th> </tr> </thead> <tbody> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='1'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/about-the-typing-category/34155' class='title raw-link raw-topic-link'>About the Typing category</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/brettcannon" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/brettcannon/25/21723_2.png" class="avatar" title='Brett Cannon - Original Poster' aria-label='Brett Cannon - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/sinoroc" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/sinoroc/25/1607_2.png" class="avatar" title='sinoroc - Frequent Poster' aria-label='sinoroc - Frequent Poster'> </a> <a rel='nofollow' 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class='discourse-tag'>typing</a> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/srittau" class="latest single"> <img width="25" height="25" src="/user_avatar/discuss.python.org/srittau/25/237_2.png" class="avatar" title='Sebastian Rittau - Original Poster, Most Recent Poster' aria-label='Sebastian Rittau - Original Poster, Most Recent Poster'> </a> </td> <td class="replies"> <span class='posts' title='posts'>0</span> </td> <td class="views"> <span class='views' title='views'>36</span> </td> <td> April 11, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='4'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/structural-pattern-matching-for-types/87871' class='title raw-link raw-topic-link'>Structural Pattern Matching for Types</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> <a href='https://discuss.python.org/tag/typing' class='discourse-tag'>typing</a> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/zach-waggoner" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/zach-waggoner/25/27173_2.png" class="avatar" title='Zach Waggoner - Original Poster' aria-label='Zach Waggoner - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/jorenham" class="latest"> <img width="25" height="25" src="/user_avatar/discuss.python.org/jorenham/25/25010_2.png" class="avatar" title='Joren Hammudoglu - Most Recent Poster' aria-label='Joren Hammudoglu - Most Recent Poster'> </a> </td> <td class="replies"> <span class='posts' title='posts'>1</span> </td> <td class="views"> <span class='views' title='views'>139</span> </td> <td> April 11, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='5'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/what-would-it-take-to-implement-type-mapping-for-generics/83402' class='title raw-link raw-topic-link'>What would it take to implement type mapping for generics?</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/Jadiker" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/jadiker/25/26427_2.png" class="avatar" title='London L. - Original Poster' aria-label='London L. - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/oscarbenjamin" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/oscarbenjamin/25/1209_2.png" class="avatar" title='Oscar Benjamin - Frequent Poster' aria-label='Oscar Benjamin - Frequent Poster'> </a> <a rel='nofollow' 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<tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='6'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/inlined-typed-dicts-and-typed-dict-comprehensions/68921' class='title raw-link raw-topic-link'>Inlined typed dicts and typed dict comprehensions</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/Viicos" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/viicos/25/14616_2.png" class="avatar" title='Victorien - Original Poster' aria-label='Victorien - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/hauntsaninja" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/hauntsaninja/25/12451_2.png" class="avatar" title='Shantanu Jain - Frequent Poster' aria-label='Shantanu Jain - Frequent Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/alwaysmpe" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/alwaysmpe/25/23663_2.png" class="avatar" title='Marc Edwards - Frequent Poster' aria-label='Marc Edwards - Frequent Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/Daverball" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/daverball/25/15931_2.png" class="avatar" title='David Salvisberg - Frequent Poster' aria-label='David Salvisberg - Frequent Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/zach-waggoner" class="latest"> <img width="25" height="25" src="/user_avatar/discuss.python.org/zach-waggoner/25/27173_2.png" class="avatar" title='Zach Waggoner - Most Recent Poster' aria-label='Zach Waggoner - Most Recent Poster'> </a> </td> <td class="replies"> <span class='posts' title='posts'>10</span> </td> <td class="views"> <span class='views' title='views'>584</span> </td> <td> April 10, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='7'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/extract-kwargs-types-from-a-function-signature/34238' class='title raw-link raw-topic-link'>Extract kwargs types from a function signature</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> <a href='https://discuss.python.org/tag/help' class='discourse-tag'>help</a> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/loic-simon" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/loic-simon/25/12736_2.png" class="avatar" title='Loïc Simon - Original Poster' aria-label='Loïc Simon - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/NeilGirdhar" class=""> 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aria-label='Zach Waggoner - Most Recent Poster'> </a> </td> <td class="replies"> <span class='posts' title='posts'>15</span> </td> <td class="views"> <span class='views' title='views'>3965</span> </td> <td> April 10, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='8'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/idea-returntype-to-refer-to-functions-return-type/87880' class='title raw-link raw-topic-link'>Idea: `ReturnType` to refer to function's return type</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> <a href='https://discuss.python.org/tag/typing' class='discourse-tag'>typing</a> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/Andrej730" class="latest single"> <img width="25" height="25" src="/user_avatar/discuss.python.org/andrej730/25/19993_2.png" class="avatar" title='Andrej - Original Poster, Most Recent Poster' aria-label='Andrej - Original Poster, Most Recent Poster'> </a> </td> <td class="replies"> <span class='posts' title='posts'>0</span> </td> <td class="views"> <span class='views' title='views'>70</span> </td> <td> April 10, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='9'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/typing-spec-gap-about-properties-in-protocols/87243' class='title raw-link raw-topic-link'>Typing spec gap about properties in Protocols</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/OfekShilon" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/ofekshilon/25/27054_2.png" class="avatar" title='Ofek Shilon - Original Poster' aria-label='Ofek Shilon - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/carljm" class="latest"> <img width="25" height="25" src="/user_avatar/discuss.python.org/carljm/25/959_2.png" class="avatar" title='Carl Meyer - Most Recent Poster' aria-label='Carl Meyer - Most Recent Poster'> </a> </td> <td class="replies"> <span class='posts' title='posts'>3</span> </td> <td class="views"> <span class='views' title='views'>215</span> </td> <td> April 10, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='10'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/current-blockers-on-runtime-deferal-of-typing-imports/76843' class='title raw-link raw-topic-link'>Current blockers on runtime deferal of 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class="replies"> <span class='posts' title='posts'>7</span> </td> <td class="views"> <span class='views' title='views'>388</span> </td> <td> April 10, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='11'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/bare-classvar-annotation/81705' class='title raw-link raw-topic-link'>Bare `ClassVar` annotation</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/Viicos" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/viicos/25/14616_2.png" class="avatar" title='Victorien - Original Poster' aria-label='Victorien - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/mikeshardmind" class=""> <img width="25" height="25" 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class='posts' title='posts'>10</span> </td> <td class="views"> <span class='views' title='views'>420</span> </td> <td> April 9, 2025 </td> </tr> <tr class="topic-list-item"> <td class="main-link" itemprop='itemListElement' itemscope itemtype='http://schema.org/ListItem'> <meta itemprop='position' content='12'> <span class="link-top-line"> <a itemprop='url' href='https://discuss.python.org/t/the-structural-type-of-typing-callable/55752' class='title raw-link raw-topic-link'>The structural type of typing.Callable</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/superbobry" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/superbobry/25/7013_2.png" class="avatar" title='Sergei Lebedev - Original Poster' aria-label='Sergei Lebedev - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/Jelle" class=""> <img width="25" 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class='title raw-link raw-topic-link'>Draft typing spec chapter for overloads</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/erictraut" class="latest"> <img width="25" height="25" src="/user_avatar/discuss.python.org/erictraut/25/15190_2.png" class="avatar" title='Eric Traut - Original Poster, Most Recent Poster' aria-label='Eric Traut - Original Poster, Most Recent Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/samwgoldman" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/samwgoldman/25/17714_2.png" class="avatar" title='Sam Goldman - Frequent Poster' aria-label='Sam Goldman - Frequent Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/Jelle" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/jelle/25/1049_2.png" class="avatar" title='Jelle Zijlstra - Frequent Poster' 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<a itemprop='url' href='https://discuss.python.org/t/specify-type-checking-false-without-typing-import/76766' class='title raw-link raw-topic-link'>Specify `TYPE_CHECKING = False` without typing import</a> </span> <div class="link-bottom-line"> <div class="discourse-tags"> </div> </div> </td> <td class='posters'> <a rel='nofollow' href="https://discuss.python.org/u/hauntsaninja" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/hauntsaninja/25/12451_2.png" class="avatar" title='Shantanu Jain - Original Poster' aria-label='Shantanu Jain - Original Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/erictraut" class=""> <img width="25" height="25" src="/user_avatar/discuss.python.org/erictraut/25/15190_2.png" class="avatar" title='Eric Traut - Frequent Poster' aria-label='Eric Traut - Frequent Poster'> </a> <a rel='nofollow' href="https://discuss.python.org/u/oscarbenjamin" class=""> <img width="25" height="25" 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