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Overriding non-enumeration attributes in Enum subclass fails #12132
Description
Bug Report
Inheriting an Enum-class and overriding, for example, a dunder-attribute fails to typecheck. Although it works fine during runtime.
To Reproduce
from enum import Enum
class BaseEnum(Enum):
__something__ = 3
class SomeEnum(BaseEnum):
__something__ = 2Expected Behavior
It should typecheck, as it passes during runtime.
Actual Behavior
error: Cannot override final attribute "__something__" (previously declared in base class "BaseEnum")
Your Environment
- Mypy version used:
master(26fdd45) - Mypy command-line flags: -
- Mypy configuration options from
mypy.ini(and other config files):
strict_optional = True
- Python version used:
3.9.4 - Operating system and version: MacOS Catalina
10.15.6
The issue has also been briefly mentioned in these places:
Activity
sobolevn commentedon Feb 5, 2022
@flaeppe are you interested in working on this? 🙂
flaeppe commentedon Feb 6, 2022
I could take a swing at it if I find some time, though I'm not too familiar with mypy code so I'm not sure what'll come out of it.
If someone else feels like working on it, please go ahead
Support overriding dunder attributes in Enum subclass (#12138)
Support overriding dunder attributes in Enum subclass (#12138)