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bpo-28146: Fix a confusing error message in str.format() (GH-24213)

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Automerge-Triggered-By: GH:pitrou
(cherry picked from commit 4aeee0b47b)

Co-authored-by: Irit Katriel <iritkatriel@yahoo.com>
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Miss Islington (bot) 2021-05-13 14:24:49 -07:00 • committed by GitHub
parent c4c3beb5ad
commit 2d780237d9
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3 changed files with 14 additions and 4 deletions
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7
Lib/test/test_unicode.py
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@ -1231,8 +1231,11 @@ class UnicodeTest(string_tests.CommonTest,
0, 1, 2, 3, 4, 5, 6, 7)
# string format spec errors
self.assertRaises(ValueError, "{0:-s}".format, '')
self.assertRaises(ValueError, format, "", "-")
sign_msg = "Sign not allowed in string format specifier"
self.assertRaisesRegex(ValueError, sign_msg, "{0:-s}".format, '')
self.assertRaisesRegex(ValueError, sign_msg, format, "", "-")
space_msg = "Space not allowed in string format specifier"
self.assertRaisesRegex(ValueError, space_msg, "{: }".format, '')
self.assertRaises(ValueError, "{0:=s}".format, '')
# Alternate formatting is not supported