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Initial support for Python 3.15.0a8 - #21255
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hauntsaninja merged 3 commits intoApr 16, 2026
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
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hauntsaninja
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@hauntsaninja Is this something worth cherry-picking for the 1.20.2? It would allow users to compile mypy with mypyc themselves for 3.15.0a8 if they want to. |
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Seems like a good idea, thanks for suggesting it! |
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JukkaL
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Apr 21, 2026
Some minor changes to be able to compile mypy with mypyc on Python 3.15.0a8. - Update `typing-extensions` to `>=4.14.0` for Python `>=3.15` due to the removal of `typing.no_type_check_decorator` python/cpython#133601 https://docs.python.org/3/library/typing.html#typing.no_type_check_decorator https://github.com/python/typing_extensions/blob/4.14.0/CHANGELOG.md - `TypeAliasType.__qualname__` was added in python/cpython#139817 - Some new FutureWarnings for b64_decode python/cpython#125346 python/cpython#141128
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Some minor changes to be able to compile mypy with mypyc on Python 3.15.0a8.
Remove deprecated typing.no_type_check_decorator cpython#133601
https://docs.python.org/3/library/typing.html#typing.no_type_check_decorator
https://github.com/python/typing_extensions/blob/4.14.0/CHANGELOG.md
Base64 decode with altchars still accepts non-altchars cpython#125346
gh-125346: Fix decoding with non-standard Base64 alphabet cpython#141128