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Add re.fullmatch() function and regex.fullmatch() method, which anchor the

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pattern at both ends of the string to match.

Patch by Matthew Barnett.
Closes #16203.
This commit is contained in:
Georg Brandl 2013-10-13 09:18:45 +02:00
parent 57841ddb5c
commit 4300019e1a
5 changed files with 156 additions and 45 deletions
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24
Lib/test/test_re.py
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@ -1061,6 +1061,30 @@ class ReTests(unittest.TestCase):
self.assertEqual(m.group(1), "")
self.assertEqual(m.group(2), "y")
def test_fullmatch(self):
# Issue 16203: Proposal: add re.fullmatch() method.
self.assertEqual(re.fullmatch(r"a", "a").span(), (0, 1))
self.assertEqual(re.fullmatch(r"a|ab", "ab").span(), (0, 2))
self.assertEqual(re.fullmatch(r".*?$", "abc").span(), (0, 3))
self.assertEqual(re.fullmatch(r".*?", "abc").span(), (0, 3))
self.assertEqual(re.fullmatch(r"a.*?b", "ab").span(), (0, 2))
self.assertEqual(re.fullmatch(r"a.*?b", "abb").span(), (0, 3))
self.assertEqual(re.fullmatch(r"a.*?b", "axxb").span(), (0, 4))
self.assertEqual(re.fullmatch(r"abc$", "abc\n"), None)
self.assertEqual(re.fullmatch(r"abc\Z", "abc\n"), None)
self.assertEqual(re.fullmatch(r"(?m)abc$", "abc\n"), None)
self.assertEqual(re.fullmatch(r"ab(?=c)cd", "abcd").span(), (0, 4))
self.assertEqual(re.fullmatch(r"ab(?<=b)cd", "abcd").span(), (0, 4))
self.assertEqual(re.fullmatch(r"(?=a|ab)ab", "ab").span(), (0, 2))
self.assertEqual(
re.compile(r"bc").fullmatch("abcd", pos=1, endpos=3).span(), (1, 3))
self.assertEqual(
re.compile(r".*?$").fullmatch("abcd", pos=1, endpos=3).span(), (1, 3))
self.assertEqual(
re.compile(r".*?").fullmatch("abcd", pos=1, endpos=3).span(), (1, 3))
def run_re_tests():
from test.re_tests import tests, SUCCEED, FAIL, SYNTAX_ERROR
if verbose: