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bpo-41681: Fix for f-string/str.format error description when using 2 , in format specifier (GH-22036) (GH-22041)

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* Fixed `f-string/str.format` error description when using two `,` in format specifier.

Co-authored-by: millefalcon <hanish0019@hmail.com>
(cherry picked from commit 0d6aa7f0ee)

Co-authored-by: han-solo <hanish0019@gmail.com>

Co-authored-by: han-solo <hanish0019@gmail.com>
This commit is contained in:
Miss Islington (bot) 2020-09-01 08:45:59 -07:00 • committed by GitHub
parent ca55ecbf9a
commit c16a2a1b64
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4 changed files with 46 additions and 2 deletions
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20
Lib/test/test_fstring.py
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@ -9,6 +9,7 @@
import ast
import os
import re
import types
import decimal
import unittest
@ -1208,6 +1209,25 @@ non-important content
with self.assertRaisesRegex(SyntaxError, err_msg):
compile("f'{a $ b}'", "?", "exec")
def test_with_two_commas_in_format_specifier(self):
error_msg = re.escape("Cannot specify ',' with ','.")
with self.assertRaisesRegex(ValueError, error_msg):
f'{1:,,}'
def test_with_two_underscore_in_format_specifier(self):
error_msg = re.escape("Cannot specify '_' with '_'.")
with self.assertRaisesRegex(ValueError, error_msg):
f'{1:__}'
def test_with_a_commas_and_an_underscore_in_format_specifier(self):
error_msg = re.escape("Cannot specify both ',' and '_'.")
with self.assertRaisesRegex(ValueError, error_msg):
f'{1:,_}'
def test_with_an_underscore_and_a_comma_in_format_specifier(self):
error_msg = re.escape("Cannot specify both ',' and '_'.")
with self.assertRaisesRegex(ValueError, error_msg):
f'{1:,_}'
if __name__ == '__main__':
unittest.main()