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bpo-45450: Improve syntax error for parenthesized arguments (GH-28906)

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Pablo Galindo Salgado 2021-11-20 18:27:40 +00:00 • committed by GitHub
parent 9852339145
commit 7a1d932528
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4 changed files with 893 additions and 445 deletions
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38
Lib/test/test_syntax.py
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@ -909,6 +909,44 @@ Missing parens after function definition
Traceback (most recent call last):
SyntaxError: expected '('
Parenthesized arguments in function definitions
>>> def f(x, (y, z), w):
... pass
Traceback (most recent call last):
SyntaxError: Function parameters cannot be parenthesized
>>> def f((x, y, z, w)):
... pass
Traceback (most recent call last):
SyntaxError: Function parameters cannot be parenthesized
>>> def f(x, (y, z, w)):
... pass
Traceback (most recent call last):
SyntaxError: Function parameters cannot be parenthesized
>>> def f((x, y, z), w):
... pass
Traceback (most recent call last):
SyntaxError: Function parameters cannot be parenthesized
>>> lambda x, (y, z), w: None
Traceback (most recent call last):
SyntaxError: Lambda expression parameters cannot be parenthesized
>>> lambda (x, y, z, w): None
Traceback (most recent call last):
SyntaxError: Lambda expression parameters cannot be parenthesized
>>> lambda x, (y, z, w): None
Traceback (most recent call last):
SyntaxError: Lambda expression parameters cannot be parenthesized
>>> lambda (x, y, z), w: None
Traceback (most recent call last):
SyntaxError: Lambda expression parameters cannot be parenthesized
Custom error messages for try blocks that are not followed by except/finally
>>> try: