New submission from Fabian Zills <[email protected]>:
When iterating over __dict__ inside a classmethod, accessing __annotations
causses RuntimeError: dictionary changed size during iteration.
This only seems to affect Python 3.10.x on a Ubuntu system.
The following can be used to reproduce this issue:
class ExampleCls:
@classmethod
def iter_cls(cls):
for name, val in cls.__dict__.items():
print(cls.__annotations__)
This can be fixed for this Example by calling _ = cls.__annotations__ before
iterating over the __dict__
----------
messages: 414582
nosy: PythonF
priority: normal
severity: normal
status: open
title: Iterating over cls.__dict__ in classmethod causes RuntimeError when
printing __annotations__
type: crash
versions: Python 3.10
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Python tracker <[email protected]>
<https://bugs.python.org/issue46930>
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