mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 08:59:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 11

bpo-29104: Fixed parsing backslashes in f-strings. (#490)

Browse source
This commit is contained in:
Serhiy Storchaka 2017-05-25 13:33:55 +03:00 • committed by GitHub
parent d1c3c13fed
commit 0cd7a3f196
3 changed files with 48 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

14
Lib/test/test_fstring.py
View file

@ -361,6 +361,20 @@ f'{a * x()}'"""
self.assertEqual(f'2\x203', '2 3')
self.assertEqual(f'\x203', ' 3')
with self.assertWarns(DeprecationWarning): # invalid escape sequence
value = eval(r"f'\{6*7}'")
self.assertEqual(value, '\\42')
self.assertEqual(f'\\{6*7}', '\\42')
self.assertEqual(fr'\{6*7}', '\\42')
AMPERSAND = 'spam'
# Get the right unicode character (&), or pick up local variable
# depending on the number of backslashes.
self.assertEqual(f'\N{AMPERSAND}', '&')
self.assertEqual(f'\\N{AMPERSAND}', '\\Nspam')
self.assertEqual(fr'\N{AMPERSAND}', '\\Nspam')
self.assertEqual(f'\\\N{AMPERSAND}', '\\&')
def test_misformed_unicode_character_name(self):
# These test are needed because unicode names are parsed
# differently inside f-strings.