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bpo-41064: Improve syntax error for invalid usage of '**' in f-strings (GH-25006)

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Pablo Galindo 2021-03-24 19:34:17 +00:00 • committed by GitHub
parent 4958f5d69d
commit 8efad61963
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4 changed files with 47 additions and 1 deletions
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9
Lib/test/test_fstring.py
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@ -1275,5 +1275,14 @@ x = (
with self.assertRaisesRegex(ValueError, error_msg):
f'{1:_,}'
def test_syntax_error_for_starred_expressions(self):
error_msg = re.escape("can't use starred expression here")
with self.assertRaisesRegex(SyntaxError, error_msg):
compile("f'{*a}'", "?", "exec")
error_msg = re.escape("can't use double starred expression here")
with self.assertRaisesRegex(SyntaxError, error_msg):
compile("f'{**a}'", "?", "exec")
if __name__ == '__main__':
unittest.main()