generic GenericAlias
#13941
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generic GenericAlias
#13941
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Diff from mypy_primer, showing the effect of this PR on open source code: pydantic (https://github.com/pydantic/pydantic)
- pydantic/v1/typing.py:47: error: Incompatible types in assignment (expression has type "tuple[()]", variable has type "type[GenericAlias]") [assignment]
+ pydantic/v1/typing.py:47: error: Incompatible types in assignment (expression has type "tuple[()]", variable has type "type[GenericAlias[_OriginT_co]]") [assignment]
discord.py (https://github.com/Rapptz/discord.py)
- discord/ext/commands/converter.py:1119: error: Return type "Greedy[T]" of "__class_getitem__" incompatible with return type "GenericAlias" in supertype "list" [override]
+ discord/ext/commands/converter.py:1119: error: Return type "Greedy[T]" of "__class_getitem__" incompatible with return type "GenericAlias[type | TypeAliasType]" in supertype "list" [override]
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I suppose that theoretically speaking (i.e. ignoring type-checkers), this brings support for higher-kinded typing 🤔.