bpo-44524: Do not set _name of _SpecialForm without need (GH-27861)

bpo-44524: Do not set _name of _SpecialForm without need (GH-27861) · python/cpython@4ceec49

@@ -461,7 +461,7 @@ class Starship:

461461 be used with isinstance() or issubclass().462462 """463463item = _type_check(parameters, f'{self} accepts only single type.')464-return _GenericAlias(self, (item,), name="ClassVar")464+return _GenericAlias(self, (item,))465465466466@_SpecialForm467467def Final(self, parameters):

@@ -482,7 +482,7 @@ class FastConnector(Connection):

482482 There is no runtime checking of these properties.483483 """484484item = _type_check(parameters, f'{self} accepts only single type.')485-return _GenericAlias(self, (item,), name="Final")485+return _GenericAlias(self, (item,))486486487487@_SpecialForm488488def Union(self, parameters):

@@ -520,12 +520,9 @@ def Union(self, parameters):

520520parameters = _remove_dups_flatten(parameters)521521if len(parameters) == 1:522522return parameters[0]523-524523if len(parameters) == 2 and type(None) in parameters:525-name = "Optional"526-else:527-name = "Union"528-return _UnionGenericAlias(self, parameters, name=name)524+return _UnionGenericAlias(self, parameters, name="Optional")525+return _UnionGenericAlias(self, parameters)529526530527@_SpecialForm531528def Optional(self, parameters):

@@ -570,7 +567,7 @@ def open_helper(file: str, mode: MODE) -> str:

570567except TypeError: # unhashable parameters571568pass572569573-return _LiteralGenericAlias(self, parameters, name="Literal")570+return _LiteralGenericAlias(self, parameters)574571575572576573@_SpecialForm

@@ -609,7 +606,7 @@ def Concatenate(self, parameters):

609606"ParamSpec variable.")610607msg = "Concatenate[arg, ...]: each arg must be a type."611608parameters = tuple(_type_check(p, msg) for p in parameters)612-return _ConcatenateGenericAlias(self, parameters, name="Concatenate")609+return _ConcatenateGenericAlias(self, parameters)613610614611615612@_SpecialForm

@@ -657,7 +654,7 @@ def is_str(val: Union[str, float]):

657654 PEP 647 (User-Defined Type Guards).658655 """659656item = _type_check(parameters, f'{self} accepts only single type.')660-return _GenericAlias(self, (item,), name="TypeGuard")657+return _GenericAlias(self, (item,))661658662659663660class ForwardRef(_Final, _root=True):

@@ -962,7 +959,7 @@ def __mro_entries__(self, bases):

962959963960def __getattr__(self, attr):964961if attr in {'__name__', '__qualname__'}:965-return self._name962+return self._name or self.__origin__.__name__966963967964# We are careful for copy and pickle.968965# Also for simplicity we just don't relay all dunder names