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Add __orig_bases__ to Generic #7827

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Add __orig_bases__ to Generic #7827

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88145e7
Add __orig_bases__ to Generic
May 11, 2022
316e2ba
Merge branch 'master' into md/add_orig_bases
May 11, 2022
4faf48f
Remove final decorator for special form
May 11, 2022
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10 changes: 8 additions & 2 deletions stdlib/typing.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -493,7 +493,6 @@ class TypeVar:
_promote = object()

# N.B. Keep this definition in sync with typing_extensions._SpecialForm
@_final
class _SpecialForm:
def __getitem__(self, parameters: Any) -> object: ...
if sys.version_info >= (3, 10):
Expand All @@ -513,7 +512,14 @@ def overload(func: _F) -> _F: ...
# `_SpecialForm` objects in typing.py that are not used elswhere in the same file
# do not need the default value assignment.
Union: _SpecialForm = ...
Generic: _SpecialForm = ...

@_final
class _GenericSpecialForm(_SpecialForm):
# More precisely this is tuple[TypeForm, ...]
# https://github.com/python/mypy/issues/9773
__orig_bases__: ClassVar[tuple[type, ...]]

Generic: _GenericSpecialForm = ...
# Protocol is only present in 3.8 and later, but mypy needs it unconditionally
Protocol: _SpecialForm = ...
Callable: _SpecialForm = ...
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