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[3.11] gh-92986: Fix ast.unparse when ImportFrom.level is None (GH-92992) (GH-96593)

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This doesn't happen naturally, but is allowed by the ASDL and compiler.
We don't want to change ASDL for backward compatibility reasons
(GH-57645, GH-92987)
(cherry picked from commit 200c9a8da0)

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
This commit is contained in:
Batuhan Taskaya 2022-09-06 13:23:26 +03:00 • committed by GitHub
parent 08d8058b79
commit a0848d169b
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3 changed files with 8 additions and 1 deletions
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6
Lib/test/test_unparse.py
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@ -422,6 +422,12 @@ class UnparseTestCase(ASTTestCase):
def test_invalid_yield_from(self):
self.check_invalid(ast.YieldFrom(value=None))
def test_import_from_level_none(self):
tree = ast.ImportFrom(module='mod', names=[ast.alias(name='x')])
self.assertEqual(ast.unparse(tree), "from mod import x")
tree = ast.ImportFrom(module='mod', names=[ast.alias(name='x')], level=None)
self.assertEqual(ast.unparse(tree), "from mod import x")
def test_docstrings(self):
docstrings = (
'this ends with double quote"',