`_io` and `_pyio` inconsistenly raise `ValueError`s on closed files · Issue #98999 · python/cpython · GitHub

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Pull requests 2.6k

Security and quality 0

stdlibStandard Library Python modules in the Lib/ directory

type-bugAn unexpected behavior, bug, or error

cpython/Modules/_io/bufferedio.c

https://github.com/python/cpython/blame/0689b99bb8c4f6058af43a52effaa8a25609dbed/Lib/test/test_io.py#L1532-L1538

While working on typeshed stubs, I've noticed that _pyio.BufferedReader.read1 does not raise ValueError after .close. While _io.BufferedReader.read1 does that.

gh-98999: Raise ValueError in _pyio on closed buffers #99009