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Title: gh-85943: Fix BytesWarning in the struct format cache under -bb by serhiy-storchaka · Pull Request #153627 · python/cpython · GitHub

Open Graph Title: gh-85943: Fix BytesWarning in the struct format cache under -bb by serhiy-storchaka · Pull Request #153627 · python/cpython

X Title: gh-85943: Fix BytesWarning in the struct format cache under -bb by serhiy-storchaka · Pull Request #153627 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: The struct module caches compiled Struct objects in a dict keyed by the format string. Since an ASCII str and the equal bytes object have the same hash, using a str format after an equal bytes form...

X Description: The struct module caches compiled Struct objects in a dict keyed by the format string. Since an ASCII str and the equal bytes object have the same hash, using a str format after an equal bytes form...

Opengraph URL: https://github.com/python/cpython/pull/153627

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When using python -bb, struct.calcsize raises a warning when used with str argument after being used with bytes (might be a larger problem with dicts) #85943https://github.com/python/cpython/issues/85943
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