[pull] main from python:main#978
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pull[bot] merged 3 commits intotj-python:mainfrom Apr 20, 2026
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`IO` is purported to be the type of the file objects returned by `open`. However, all methods on those objects take positional-only arguments, while `IO`'s methods are declared with regular arguments. As such, the file objects cannot actually be considered to implement `IO`. The same thing applies to `BinaryIO`. Fix this by adjusting the definition of these ABCs to match the file objects. This is technically a breaking change, but it is unlikely to actually break anything: * These methods should never be called at runtime, since they are abstract. Therefore, this should not cause any runtime errors. * In typeshed these arguments are already positional-only, so this should not cause any errors during typechecking either.
Correct the description of the default state of test module compilation.
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