gh-142965: Fix Concatenate documentation to reflect valid use cases#143316
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sandole wants to merge 2 commits intopython:mainfrom
Open
gh-142965: Fix Concatenate documentation to reflect valid use cases#143316sandole wants to merge 2 commits intopython:mainfrom
sandole wants to merge 2 commits intopython:mainfrom
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…ases The documentation previously stated that Concatenate is only valid when used as the first argument to Callable, but according to PEP 612, it can also be used when instantiating user-defined generic classes with ParamSpec parameters.
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Summary
typing.Concatenatethat claimed it is only valid as the first argument toCallableConcatenatecan also be used when instantiating user-defined generic classes withParamSpecparameters, as specified in PEP 612Test plan
Fixes #142965
typing.Concatenate#142965📚 Documentation preview 📚: https://cpython-previews--143316.org.readthedocs.build/