cpython

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Miss Islington (bot) 409ce4a09e

bpo-42669: Document that except rejects nested tuples (GH-23822) (GH-23870)

In Python 2, it was possible to use `except` with a nested tuple, and occasionally natural.  For example, `zope.formlib.interfaces.InputErrors` is a tuple of several exception classes, and one might reasonably think to do something like this:

    try:
        self.getInputValue()
        return True
    except (InputErrors, SomethingElse):
        return False

As of Python 3.0, this raises `TypeError: catching classes that do not inherit from BaseException is not allowed` instead: one must instead either break it up into multiple `except` clauses or flatten the tuple.  However, the reference documentation was never updated to match this new restriction.  Make it clear that the definition is no longer recursive.

Automerge-Triggered-By: GH:ericvsmith
(cherry picked from commit c95f8bc2700b42f4568886505a819816c9b0ba28)

Co-authored-by: Colin Watson <cjwatson@debian.org>

Co-authored-by: Colin Watson <cjwatson@debian.org>

2020-12-20 16:18:08 -05:00

compound_stmts.rst

bpo-42669: Document that except rejects nested tuples (GH-23822) (GH-23870)

2020-12-20 16:18:08 -05:00

datamodel.rst

bpo-6761: Enhance __call__ documentation (GH-7987)

2020-10-27 09:42:36 -07:00

executionmodel.rst

Doc: Add -m reference in context of code execution (GH-16045)

2019-09-12 14:19:06 +01:00

expressions.rst

bpo-42198: Link to GenericAlias in typing and expressions (GH-23030)