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bpo-46503: Prevent an assert from firing when parsing some invalid \N sequences in f-strings. (GH-30865) (30867)

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* bpo-46503: Prevent an assert from firing.  Also fix one nearby tiny PEP-7 nit.

* Added blurb.
(cherry picked from commit 0daf72194b)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>
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Miss Islington (bot) 2022-01-24 19:08:42 -08:00 • committed by GitHub
parent 3f1ea163ea
commit c314e3e829
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3 changed files with 19 additions and 2 deletions
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4
Lib/test/test_fstring.py
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@ -747,12 +747,16 @@ def test_misformed_unicode_character_name(self):
# differently inside f-strings.
self.assertAllRaise(SyntaxError, r"\(unicode error\) 'unicodeescape' codec can't decode bytes in position .*: malformed \\N character escape",
[r"f'\N'",
r"f'\N '",
r"f'\N '", # See bpo-46503.
r"f'\N{'",
r"f'\N{GREEK CAPITAL LETTER DELTA'",
# Here are the non-f-string versions,
# which should give the same errors.
r"'\N'",
r"'\N '",
r"'\N '",
r"'\N{'",
r"'\N{GREEK CAPITAL LETTER DELTA'",
])