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use Literal[_MISSING_TYPE.MISSING] for dataclasses.field defaults (#13256)

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This commit is contained in:
Stephen Morton
2024-12-18 10:21:31 -08:00
committed by GitHub
parent c2a33373cf
commit bd728fbfae
2 changed files with 11 additions and 5 deletions
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2
stdlib/@tests/stubtest_allowlists/common.txt
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@@ -330,8 +330,6 @@ _?ctypes.Union.__getattr__ # doesn't exist, but makes things easy if we pretend
# These would ideally be special-cased by type checkers; see https://github.com/python/mypy/issues/2220
_?ctypes.Array.__iter__
dataclasses.field # White lies around defaults
# __all__-related weirdness (see #6523)
email.__all__
email.base64mime

14
stdlib/dataclasses.pyi
View File

@@ -152,33 +152,37 @@ if sys.version_info >= (3, 10):
def field(
*,
default: _T,
default_factory: Literal[_MISSING_TYPE.MISSING] = ...,
init: bool = True,
repr: bool = True,
hash: bool | None = None,
compare: bool = True,
metadata: Mapping[Any, Any] | None = None,
kw_only: bool = ...,
kw_only: bool | Literal[_MISSING_TYPE.MISSING] = ...,
) -> _T: ...
@overload
def field(
*,
default: Literal[_MISSING_TYPE.MISSING] = ...,
default_factory: Callable[[], _T],
init: bool = True,
repr: bool = True,
hash: bool | None = None,
compare: bool = True,
metadata: Mapping[Any, Any] | None = None,
kw_only: bool = ...,
kw_only: bool | Literal[_MISSING_TYPE.MISSING] = ...,
) -> _T: ...
@overload
def field(
*,
default: Literal[_MISSING_TYPE.MISSING] = ...,
default_factory: Literal[_MISSING_TYPE.MISSING] = ...,
init: bool = True,
repr: bool = True,
hash: bool | None = None,
compare: bool = True,
metadata: Mapping[Any, Any] | None = None,
kw_only: bool = ...,
kw_only: bool | Literal[_MISSING_TYPE.MISSING] = ...,
) -> Any: ...
else:
@@ -186,6 +190,7 @@ else:
def field(
*,
default: _T,
default_factory: Literal[_MISSING_TYPE.MISSING] = ...,
init: bool = True,
repr: bool = True,
hash: bool | None = None,
@@ -195,6 +200,7 @@ else:
@overload
def field(
*,
default: Literal[_MISSING_TYPE.MISSING] = ...,
default_factory: Callable[[], _T],
init: bool = True,
repr: bool = True,
@@ -205,6 +211,8 @@ else:
@overload
def field(
*,
default: Literal[_MISSING_TYPE.MISSING] = ...,
default_factory: Literal[_MISSING_TYPE.MISSING] = ...,
init: bool = True,
repr: bool = True,
hash: bool | None = None,