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Title: gh-88959: Add __parameters__ and __getitem__ in TypeVar and ParamSpec by serhiy-storchaka · Pull Request #27511 · python/cpython · GitHub

Open Graph Title: gh-88959: Add __parameters__ and __getitem__ in TypeVar and ParamSpec by serhiy-storchaka · Pull Request #27511 · python/cpython

X Title: gh-88959: Add __parameters__ and __getitem__ in TypeVar and ParamSpec by serhiy-storchaka · Pull Request #27511 · python/cpython

Description: Issue: Add __parameters__ and __getitem__ in TypeVar and ParamSpec #88959

Open Graph Description: Issue: Add __parameters__ and __getitem__ in TypeVar and ParamSpec #88959

X Description: Issue: Add __parameters__ and __getitem__ in TypeVar and ParamSpec #88959

Opengraph URL: https://github.com/python/cpython/pull/27511

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Fix substitution of bare ClassVar and Final.https://github.com/python/cpython/pull/27511/commits/d330520172044875430a20fc9dc95c959e6ce92e
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Add more tests and fix substitution of a TypeVar with a ParamSpechttps://github.com/python/cpython/pull/27511/commits/af0d9ea35035ae569d465fc182b308048c40c454
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