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Add issue: Generator expression must be parenthesized if not sole argument

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Dave Halter
2017-07-23 22:56:19 +02:00
parent 42842a6949
commit 33769c6243
2 changed files with 9 additions and 0 deletions
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8
parso/python/normalizer.py
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@@ -141,6 +141,14 @@ class ErrorFinder(Normalizer):
and not self._context.is_async_funcdef():
message = "asynchronous comprehension outside of an asynchronous function"
self._add_syntax_error(message, node)
elif node.type == 'arglist':
first_arg = node.children[0]
if first_arg.type == 'argument' \
and first_arg.children[1].type == 'comp_for' \
and len(node.children) >= 2:
# foo(x for x in [], b)
message = "Generator expression must be parenthesized if not sole argument"
self._add_syntax_error(message, node)
yield