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Closes #14462: allow any valid Python identifier in sre group names, as documented.

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This commit is contained in:
Georg Brandl 2013-04-14 11:40:00 +02:00
parent 991fc5736e
commit 1d472b74cb
2 changed files with 24 additions and 4 deletions
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8
Lib/test/test_re.py
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@ -180,6 +180,10 @@ class ReTests(unittest.TestCase):
self.assertRaises(re.error, re.compile, '(?(a))')
self.assertRaises(re.error, re.compile, '(?(1a))')
self.assertRaises(re.error, re.compile, '(?(a.))')
# New valid/invalid identifiers in Python 3
re.compile('(?P<µ>x)(?P=µ)(?(µ)y)')
re.compile('(?P<𝔘𝔫𝔦𝔠𝔬𝔡𝔢>x)(?P=𝔘𝔫𝔦𝔠𝔬𝔡𝔢)(?(𝔘𝔫𝔦𝔠𝔬𝔡𝔢)y)')
self.assertRaises(re.error, re.compile, '(?P<©>x)')
def test_symbolic_refs(self):
self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<a', 'xx')
@ -192,6 +196,10 @@ class ReTests(unittest.TestCase):
self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\g<b>', 'xx')
self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\\2', 'xx')
self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<-1>', 'xx')
# New valid/invalid identifiers in Python 3
self.assertEqual(re.sub('(?P<µ>x)', r'\g<µ>', 'xx'), 'xx')
self.assertEqual(re.sub('(?P<𝔘𝔫𝔦𝔠𝔬𝔡𝔢>x)', r'\g<𝔘𝔫𝔦𝔠𝔬𝔡𝔢>', 'xx'), 'xx')
self.assertRaises(re.error, re.sub, '(?P<a>x)', r'\g<©>', 'xx')
def test_re_subn(self):
self.assertEqual(re.subn("(?i)b+", "x", "bbbb BBBB"), ('x x', 2))