[issue42413] Replace custom exception socket.timeout with TimeoutError

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

I see this issue as a follow-up of PEP 3151 which started to uniformize IOError, OSError and many variants that we had in Python 2.

socket.timeout was introduced as a subclass of TimeoutError according to:
https://www.python.org/dev/peps/pep-3151/#new-exception-classes

In Python 3.9, socket.timeout and TimeoutError are subclasses of OSError but are different. I agree that it was confusion.

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