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fix an ambiguity in the grammar from the implementation of extended unpacking

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(one which was strangely "resolved" by pgen)

This also kills the unused testlist1 rule and fixes parse tree validation of
extended unpacking.
This commit is contained in:
Benjamin Peterson 2009-09-27 02:43:28 +00:00
parent 10430ad7aa
commit 4905e80c3d
8 changed files with 1119 additions and 1085 deletions
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6
Lib/test/test_parser.py
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@ -242,6 +242,12 @@ class RoundtripLegalSyntaxTestCase(unittest.TestCase):
(0, '', 2, -1)],
terminals)
def test_extended_unpacking(self):
self.check_suite("*a = y")
self.check_suite("x, *b, = m")
self.check_suite("[*a, *b] = y")
self.check_suite("for [*x, b] in x: pass")
#
# Second, we take *invalid* trees and make sure we get ParserError