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bpo-40631: Disallow single parenthesized star target (GH-24027)

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Lysandros Nikolaou 2021-01-03 01:14:21 +02:00 • committed by GitHub
parent 8f8de7380c
commit 2ea320dddd
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4 changed files with 979 additions and 700 deletions
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Lib/test/test_unpack_ex.py
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@ -346,6 +346,31 @@ Now some general starred expressions (all fail).
...
SyntaxError: can't use starred expression here
>>> (*x),y = 1, 2 # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: can't use starred expression here
>>> (((*x))),y = 1, 2 # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: can't use starred expression here
>>> z,(*x),y = 1, 2, 4 # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: can't use starred expression here
>>> z,(*x) = 1, 2 # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: can't use starred expression here
>>> ((*x),y) = 1, 2 # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: can't use starred expression here
Some size constraints (all fail.)
>>> s = ", ".join("a%d" % i for i in range(1<<8)) + ", *rest = range(1<<8 + 1)"