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bpo-32023: Disallow genexprs without parenthesis in class definitions. (#4400)

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Serhiy Storchaka 2017-11-15 17:39:37 +02:00 • committed by GitHub
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@ -638,10 +638,14 @@ Changes in Python behavior
f(1 for x in [1],)
class C(1 for x in [1]):
pass
Python 3.7 now correctly raises a :exc:`SyntaxError`, as a generator
expression always needs to be directly inside a set of parentheses
and cannot have a comma on either side.
(Contributed by Serhiy Storchaka in :issue:`32012`.)
and cannot have a comma on either side, and the duplication of the
parentheses can be omitted only on calls.
(Contributed by Serhiy Storchaka in :issue:`32012` and :issue:`32023`.)
Changes in the Python API