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gh-115931: Fix SyntaxWarning
s in test_unparse
(#115935)
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@ -650,9 +650,18 @@ def test_multiquote_joined_string(self):
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self.check_ast_roundtrip("""f'''""\"''\\'{""\"\\n\\"'''""\" '''\\n'''}''' """)
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def test_backslash_in_format_spec(self):
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self.check_ast_roundtrip("""f"{x:\\ }" """)
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import re
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msg = re.escape("invalid escape sequence '\\ '")
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with self.assertWarnsRegex(SyntaxWarning, msg):
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self.check_ast_roundtrip("""f"{x:\\ }" """)
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self.check_ast_roundtrip("""f"{x:\\n}" """)
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self.check_ast_roundtrip("""f"{x:\\\\ }" """)
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self.check_ast_roundtrip("""f"{x:\\\\\\ }" """)
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with self.assertWarnsRegex(SyntaxWarning, msg):
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self.check_ast_roundtrip("""f"{x:\\\\\\ }" """)
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self.check_ast_roundtrip("""f"{x:\\\\\\n}" """)
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self.check_ast_roundtrip("""f"{x:\\\\\\\\ }" """)
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def test_quote_in_format_spec(self):
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