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Description
Intest_fstring thetest_conversions test is failing due to what seems a mismatched error message but it may very well be a problem in the tokenizer. We need to investigate and either fix the tokenizer or update the test error messages. Example failure:
FAIL: test_conversions (test.test_fstring.TestCase) (str="f'{3!ss:s}'")\n---------------------------------------------------------------------- File "<string>", line 1 f'{3!ss:s}' ^SyntaxError: Invalid conversion characterDuring handling of the above exception, another exception occurred:Traceback (most recent call last): File "/home/pablogsal/github/python/f-string-grammar/Lib/test/test_fstring.py", line 32, in assertAllRaise with self.assertRaisesRegex(exception_type, regex): ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^AssertionError: "f-string: expecting '}'" does not match "Invalid conversion character (<string>, line 1)"