Message384563
We noticed a behavior change in Python3.10.0a4 (it works properly in Python3.10.0a3) when running Django's test suite[1]. Subclassing `enum.Enum` with `ipaddress.IPv4Network/IPv6Network` raises `TypeError`, e.g.
>>> import enum
>>> import ipaddress
>>> class NewEnum(ipaddress.IPv4Address, enum.Enum):
... pass
...
>>> class NewEnum(ipaddress.IPv4Network, enum.Enum):
... pass
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.10/enum.py", line 239, in __new__
enum_class.__bases__ = enum_class.__bases__[1:] #or (object, )
File "/usr/local/lib/python3.10/enum.py", line 483, in __setattr__
super().__setattr__(name, value)
TypeError: __bases__ assignment: 'IPv4Network' object layout differs from '_NoInitSubclass'
It still works for `ipaddress.IPv4Address/IPv6Address`.
[1] https://github.com/django/django/blob/102d92fc09849e1a9004dd3f9a14a0ea9ca392cd/tests/model_enums/tests.py#L225-L235 |
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Date |
User |
Action |
Args |
2021-01-07 06:39:43 | felixxm | set | recipients:
+ felixxm, barry, eli.bendersky, ethan.furman |
2021-01-07 06:39:43 | felixxm | set | messageid: <1610001583.18.0.772940964765.issue42851@roundup.psfhosted.org> |
2021-01-07 06:39:43 | felixxm | link | issue42851 messages |
2021-01-07 06:39:43 | felixxm | create | |
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