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[3.12] gh-115931: Fix SyntaxWarnings in test_unparse (GH-115935) #115948

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Merged
merged 1 commit into from
Feb 26, 2024
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[3.12] gh-115931: Fix SyntaxWarnings in test_unparse (GH-115935) #115948

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13 changes: 11 additions & 2 deletions Lib/test/test_unparse.py
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Original file line number Diff line number Diff line change
Expand Up @@ -650,9 +650,18 @@ def test_multiquote_joined_string(self):
self.check_ast_roundtrip("""f'''""\"''\\'{""\"\\n\\"'''""\" '''\\n'''}''' """)

def test_backslash_in_format_spec(self):
self.check_ast_roundtrip("""f"{x:\\ }" """)
import re
msg = re.escape("invalid escape sequence '\\ '")
with self.assertWarnsRegex(SyntaxWarning, msg):
self.check_ast_roundtrip("""f"{x:\\ }" """)
self.check_ast_roundtrip("""f"{x:\\n}" """)

self.check_ast_roundtrip("""f"{x:\\\\ }" """)
self.check_ast_roundtrip("""f"{x:\\\\\\ }" """)

with self.assertWarnsRegex(SyntaxWarning, msg):
self.check_ast_roundtrip("""f"{x:\\\\\\ }" """)
self.check_ast_roundtrip("""f"{x:\\\\\\n}" """)

self.check_ast_roundtrip("""f"{x:\\\\\\\\ }" """)

def test_quote_in_format_spec(self):
Expand Down