10000 bpo-40621: except clauses should use NAME, not target by hauntsaninja · Pull Request #20086 · python/cpython · GitHub
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bpo-40621: except clauses should use NAME, not target #20086

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bpo-40621: except clauses should use NAME, not target #20086

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490a79e
test_syntax: add try-except cases that crash with the new parser
May 14, 2020
ff13ce0
pegen: make except take a NAME, not a target
May 14, 2020
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test_syntax: add try-except cases that crash with the new parser
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hauntsaninja committed May 14, 2020
commit 490a79e970cae91d1383a9081186b0b809be6da5
25 changes: 25 additions & 0 deletions Lib/test/test_syntax.py
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Expand Up @@ -529,6 +529,31 @@
...
SyntaxError: no binding for nonlocal '_A__x' found

Tests for try-except clauses:
>>> try:
... ...
... except Exception as a.b:
... pass
Traceback (most recent call last):
...
SyntaxError: invalid syntax

>>> try:
... ...
... except Exception as a[0]:
... pass
Traceback (most recent call last):
...
SyntaxError: invalid syntax

>>> try:
... ...
... except Exception as (a):
... pass
Traceback (most recent call last):
...
SyntaxError: invalid syntax


This tests assignment-context; there was a bug in Python 2.5 where compiling
a complex 'if' (one with 'elif') would fail to notice an invalid suite,
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