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bpo-40334: Allow trailing comma in parenthesised context managers (GH-19964)

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Pablo Galindo 2020-05-06 22:54:34 +01:00 • committed by GitHub
parent 441416c9a0
commit 99db2a1db7
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3 changed files with 79 additions and 7 deletions
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66
Lib/test/test_grammar.py
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@ -1,7 +1,7 @@
# Python test set -- part 1, grammar.
# This just tests whether the parser accepts them all.
from test.support import check_syntax_error, check_syntax_warning
from test.support import check_syntax_error, check_syntax_warning, use_old_parser
import inspect
import unittest
import sys
@ -1694,6 +1694,70 @@ class GrammarTests(unittest.TestCase):
with manager() as x, manager():
pass
if not use_old_parser():
test_cases = [
"""if 1:
with (
manager()
):
pass
""",
"""if 1:
with (
manager() as x
):
pass
""",
"""if 1:
with (
manager() as (x, y),
manager() as z,
):
pass
""",
"""if 1:
with (
manager(),
manager()
):
pass
""",
"""if 1:
with (
manager() as x,
manager() as y
):
pass
""",
"""if 1:
with (
manager() as x,
manager()
):
pass
""",
"""if 1:
with (
manager() as x,
manager() as y,
manager() as z,
):
pass
""",
"""if 1:
with (
manager() as x,
manager() as y,
manager(),
):
pass
""",
]
for case in test_cases:
with self.subTest(case=case):
compile(case, "<string>", "exec")
def test_if_else_expr(self):
# Test ifelse expressions in various cases
def _checkeval(msg, ret):