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gh-133999: Fix except parsing regression in 3.14 (#134035)

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sobolevn 2025-05-17 17:57:02 +03:00 • committed by GitHub
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4 changed files with 43 additions and 12 deletions
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Lib/test/test_syntax.py
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@ -1431,6 +1431,23 @@ Better error message for using `except as` with not a name:
Traceback (most recent call last):
SyntaxError: cannot use except* statement with literal
Regression tests for gh-133999:
>>> try: pass
... except TypeError as name: raise from None
Traceback (most recent call last):
SyntaxError: invalid syntax
>>> try: pass
... except* TypeError as name: raise from None
Traceback (most recent call last):
SyntaxError: invalid syntax
>>> match 1:
... case 1 | 2 as abc: raise from None
Traceback (most recent call last):
SyntaxError: invalid syntax
Ensure that early = are not matched by the parser as invalid comparisons
>>> f(2, 4, x=34); 1 $ 2
Traceback (most recent call last):