pygments: Fix return type of pygments.lexers.guess_lexer_for_filename #13515
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It returns a Lexer instance, not a Lexer class. See https://github.com/pygments/pygments/blob/edef94d66c2d70f05a86ac6098a69ab253b8d946/pygments/lexers/__init__.py#L261
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Diff from mypy_primer, showing the effect of this PR on open source code: rich (https://github.com/Textualize/rich)
- rich/syntax.py:385: error: Incompatible types in assignment (expression has type "LexerMeta", variable has type "Lexer | None") [assignment]
+ rich/traceback.py:642: error: "Lexer" has no attribute "name" [attr-defined]
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srittau
approved these changes
Feb 19, 2025
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It returns a Lexer instance, not a Lexer class. See https://github.com/pygments/pygments/blob/edef94d66c2d70f05a86ac6098a69ab253b8d946/pygments/lexers/__init__.py#L261