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Use TypeAlias where possible for type aliases (#7630)

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This commit is contained in:
Alex Waygood
2022-04-16 02:01:00 +01:00
committed by GitHub
parent c0e6dd3f3f
commit 740193a8fc
218 changed files with 760 additions and 625 deletions
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14
stdlib/subprocess.pyi
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@@ -2,7 +2,7 @@ import sys
from _typeshed import Self, StrOrBytesPath
from types import TracebackType
from typing import IO, Any, AnyStr, Callable, Generic, Iterable, Mapping, Sequence, TypeVar, overload
from typing_extensions import Literal
from typing_extensions import Literal, TypeAlias
if sys.version_info >= (3, 9):
from types import GenericAlias
@@ -102,18 +102,18 @@ else:
# reveal_type(x) # bytes, based on the overloads
# except TimeoutError as e:
# reveal_type(e.cmd) # Any, but morally is _CMD
_FILE = None | int | IO[Any]
_TXT = bytes | str
_FILE: TypeAlias = None | int | IO[Any]
_TXT: TypeAlias = bytes | str
if sys.version_info >= (3, 8):
_CMD = StrOrBytesPath | Sequence[StrOrBytesPath]
_CMD: TypeAlias = StrOrBytesPath | Sequence[StrOrBytesPath]
else:
# Python 3.6 doesn't support _CMD being a single PathLike.
# See: https://bugs.python.org/issue31961
_CMD = _TXT | Sequence[StrOrBytesPath]
_CMD: TypeAlias = _TXT | Sequence[StrOrBytesPath]
if sys.platform == "win32":
_ENV = Mapping[str, str]
_ENV: TypeAlias = Mapping[str, str]
else:
_ENV = Mapping[bytes, StrOrBytesPath] | Mapping[str, StrOrBytesPath]
_ENV: TypeAlias = Mapping[bytes, StrOrBytesPath] | Mapping[str, StrOrBytesPath]
_T = TypeVar("_T")