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42cbce538b
Summary -- Fixes #16874. I previously emitted a syntax error when starred annotations were _allowed_ rather than when they were actually used. This caused false positives for any starred parameter name because these are allowed to have starred annotations but not required to. The fix is to check if the annotation is actually starred after parsing it. Test Plan -- New inline parser tests derived from the initial report and more examples from the comments, although I think the first case should cover them all. |
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Ruff Python Parser
Ruff's Python parser is a hand-written recursive descent parser which can parse Python source code into an Abstract Syntax Tree (AST). It also utilizes the Pratt parsing technique to parse expressions with different precedence.
Try out the parser in the playground.
Python version support
The parser supports the latest Python syntax, which is currently Python 3.12.
It does not throw syntax errors if it encounters a syntax feature that is not
supported by the target-version.
This will be fixed in a future release (see https://github.com/astral-sh/ruff/issues/6591).
Contributing
Refer to the contributing guidelines to get started and GitHub issues with the parser label for issues that need help.