gh-94996: Disallow parsing pos only params with feature_version < (3, 8) (GH-94997)

(cherry picked from commit b5e3ea2862)

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
This commit is contained in:
Miss Islington (bot) 2022-08-12 10:53:09 -07:00 committed by GitHub
parent 7fdda1a47f
commit 4abf84602f
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5 changed files with 15 additions and 6 deletions

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@ -738,6 +738,14 @@ class AST_Tests(unittest.TestCase):
expressions[0] = f"expr = {ast.expr.__subclasses__()[0].__doc__}"
self.assertCountEqual(ast.expr.__doc__.split("\n"), expressions)
def test_positional_only_feature_version(self):
ast.parse('def foo(x, /): ...', feature_version=(3, 8))
ast.parse('def bar(x=1, /): ...', feature_version=(3, 8))
with self.assertRaises(SyntaxError):
ast.parse('def foo(x, /): ...', feature_version=(3, 7))
with self.assertRaises(SyntaxError):
ast.parse('def bar(x=1, /): ...', feature_version=(3, 7))
def test_parenthesized_with_feature_version(self):
ast.parse('with (CtxManager() as example): ...', feature_version=(3, 10))
# While advertised as a feature in Python 3.10, this was allowed starting 3.9
@ -746,7 +754,7 @@ class AST_Tests(unittest.TestCase):
ast.parse('with (CtxManager() as example): ...', feature_version=(3, 8))
ast.parse('with CtxManager() as example: ...', feature_version=(3, 8))
def test_issue40614_feature_version(self):
def test_debug_f_string_feature_version(self):
ast.parse('f"{x=}"', feature_version=(3, 8))
with self.assertRaises(SyntaxError):
ast.parse('f"{x=}"', feature_version=(3, 7))