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Derive EnumMeta from ABCMeta (#1598)

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Avoid inconsistent metaclass structure for enum mixins due to #1595 - e.g. mypy/#2824
This commit is contained in:
Elazar Gershuni
2017-09-11 03:44:53 +03:00
committed by Jelle Zijlstra
parent 6865c24a4c
commit d4b21efbe8
1 changed files with 6 additions and 1 deletions
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7
stdlib/3.4/enum.pyi
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@@ -1,10 +1,15 @@
import sys
from typing import List, Any, TypeVar, Union, Iterable, Iterator, TypeVar, Generic, Type, Sized, Reversible, Container, Mapping
from abc import ABCMeta
_T = TypeVar('_T', bound=Enum)
_S = TypeVar('_S', bound=Type[Enum])
class EnumMeta(type, Iterable[Enum], Sized, Reversible[Enum], Container[Enum]):
# Note: EnumMeta actually subclasses type directly, not ABCMeta.
# This is a temporary workaround to allow multiple creation of enums with builtins
# such as str as mixins, which due to the handling of ABCs of builtin types, cause
# spurious inconsistent metaclass structure. See #1595.
class EnumMeta(ABCMeta, Iterable[Enum], Sized, Reversible[Enum], Container[Enum]):
def __iter__(self: Type[_T]) -> Iterator[_T]: ...
def __reversed__(self: Type[_T]) -> Iterator[_T]: ...
def __contains__(self, member: Any) -> bool: ...