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[3.9] bpo-39679: Fix singledispatchmethod classmethod/staticmethod bug
#29087
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This commit fixes a bug in the 3.9 branch where stacking `@functools.singledispatchmethod` on top of `@classmethod` or `@staticmethod` caused an exception to be raised if the method was registered using type-annotations rather than `@method.register(int)`. Tests for this scenario were added to the 3.11 and 3.10 branches in python#29034 and python#29072; this commit also backports those tests to the 3.9 branch.
AlexWaygood
changed the title
singledispatchmethod classmethod/staticmethod bugsingledispatchmethod classmethod/staticmethod bug
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I'm fairly new to reStructuredText — any idea what's causing the CI failure? |
uriyyo
reviewed
Oct 23, 2021
Misc/NEWS.d/next/Library/2021-10-20-10-07-44.bpo-39679.nVYJJ3.rst
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Co-authored-by: Yurii Karabas <1998uriyyo@gmail.com>
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@ambv could you possibly take a look at this, if you have the time? Would be great to get this bugfix in for 3.9.8 :) |
ambv
reviewed
Oct 28, 2021
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This commit fixes a bug in the 3.9 branch where stacking
@functools.singledispatchmethodon top of@classmethodor@staticmethodcaused an exception to be raised if the method was registered using
type-annotations rather than
@method.register(int). Tests for this scenariowere added to the 3.11 and 3.10 branches in #29034 and #29072; this commit
also backports those tests to the 3.9 branch.
The solution proposed in this commit partially derives from ideas suggested by Karthikeyan Singaravelan and Dmitry Kulazhenko in the thread on bugs.python.org.
https://bugs.python.org/issue39679