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## Summary This should give us better coverage for the unsupported syntax error features and increases our confidence that the formatter doesn't accidentially introduce new unsupported syntax errors. A feature like this would have been very useful when working on f-string formatting where it took a lot of iteration to find all Python 3.11 or older incompatibilities. ## Test Plan I applied my changes on top of https://github.com/astral-sh/ruff/pull/16523 and removed the target version check in the with-statement formatting code. As expected, the integration tests now failed |
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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.