Clarify documentation for except*

[yangdanny97]

Documentation

The documentation for except* states

An except* clause must have a matching type, and this type cannot be a subclass of BaseExceptionGroup.

This incorrectly implies that there can only be one matching type, when tuples of types are allowed in except*.

I propose to change this to:

An except* clause must have a matching type or a tuple of matching types, which cannot be a subclass of BaseExceptionGroup.

This has been discussed in the forum: https://discuss.python.org/t/clarifying-typing-behavior-for-exception-handlers-except-except/55060

Linked PRs

• gh-120521: clarify except* documentation to allow tuples #120523
• [3.13] gh-120521: clarify except* documentation to allow tuples (GH-120523) #120750
• [3.12] gh-120521: clarify except* documentation to allow tuples (GH-120523) #120751