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This PR adds a syntax error if the parser encounters a `TryStmt` that
has except clauses both with and without a star.
The displayed error points to each except clause that contradicts the
original except clause kind. So, for example,
```python
try:
....
except: #<-- we assume this is the desired except kind
....
except*: #<--- error will point here
....
except*: #<--- and here
....
```
Closes #14860
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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.