我们从Python开源项目中，提取了以下9个代码示例，用于说明如何使用regex.V1。
def test_scoped_and_inline_flags(self): # Issues 433028, 433024, 433027. self.assertEqual(regex.search(r"(?i)Ab", "ab").span(), (0, 2)) self.assertEqual(regex.search(r"(?i:A)b", "ab").span(), (0, 2)) self.assertEqual(regex.search(r"A(?i)b", "ab").span(), (0, 2)) self.assertEqual(regex.search(r"A(?iV1)b", "ab"), None) self.assertRaisesRegex(regex.error, self.CANT_TURN_OFF, lambda: regex.search(r"(?V0-i)Ab", "ab", flags=regex.I)) self.assertEqual(regex.search(r"(?V0)Ab", "ab"), None) self.assertEqual(regex.search(r"(?V1)Ab", "ab"), None) self.assertEqual(regex.search(r"(?V1-i)Ab", "ab", flags=regex.I), None) self.assertEqual(regex.search(r"(?-i:A)b", "ab", flags=regex.I), None) self.assertEqual(regex.search(r"A(?V1-i)b", "ab", flags=regex.I).span(), (0, 2))
def _apply_search_backrefs(pattern, flags=0): """Apply the search backrefs to the search pattern.""" if isinstance(pattern, (compat.string_type, compat.binary_type)): re_verbose = VERBOSE & flags if flags & V0: re_version = V0 elif flags & V1: re_version = V1 else: re_version = 0 pattern = RegexSearchTemplate(pattern, re_verbose, re_version).apply() elif isinstance(pattern, REGEX_TYPE): if flags: raise ValueError("Cannot process flags argument with a compiled pattern!") else: raise TypeError("Not a string or compiled pattern!") return pattern
def test_bug_462270(self): # Test for empty sub() behaviour, see SF bug #462270 self.assertEqual(regex.sub('(?V0)x*', '-', 'abxd'), '-a-b-d-') self.assertEqual(regex.sub('(?V1)x*', '-', 'abxd'), '-a-b--d-') self.assertEqual(regex.sub('x+', '-', 'abxd'), 'ab-d')
def test_re_split(self): self.assertEqual(regex.split(":", ":a:b::c"), ['', 'a', 'b', '', 'c']) self.assertEqual(regex.split(":*", ":a:b::c"), ['', 'a', 'b', 'c']) self.assertEqual(regex.split("(:*)", ":a:b::c"), ['', ':', 'a', ':', 'b', '::', 'c']) self.assertEqual(regex.split("(?::*)", ":a:b::c"), ['', 'a', 'b', 'c']) self.assertEqual(regex.split("(:)*", ":a:b::c"), ['', ':', 'a', ':', 'b', ':', 'c']) self.assertEqual(regex.split("([b:]+)", ":a:b::c"), ['', ':', 'a', ':b::', 'c']) self.assertEqual(regex.split("(b)|(:+)", ":a:b::c"), ['', None, ':', 'a', None, ':', '', 'b', None, '', None, '::', 'c']) self.assertEqual(regex.split("(?:b)|(?::+)", ":a:b::c"), ['', 'a', '', '', 'c']) self.assertEqual(regex.split("x", "xaxbxc"), ['', 'a', 'b', 'c']) self.assertEqual([m for m in regex.splititer("x", "xaxbxc")], ['', 'a', 'b', 'c']) self.assertEqual(regex.split("(?r)x", "xaxbxc"), ['c', 'b', 'a', '']) self.assertEqual([m for m in regex.splititer("(?r)x", "xaxbxc")], ['c', 'b', 'a', '']) self.assertEqual(regex.split("(x)|(y)", "xaxbxc"), ['', 'x', None, 'a', 'x', None, 'b', 'x', None, 'c']) self.assertEqual([m for m in regex.splititer("(x)|(y)", "xaxbxc")], ['', 'x', None, 'a', 'x', None, 'b', 'x', None, 'c']) self.assertEqual(regex.split("(?r)(x)|(y)", "xaxbxc"), ['c', 'x', None, 'b', 'x', None, 'a', 'x', None, '']) self.assertEqual([m for m in regex.splititer("(?r)(x)|(y)", "xaxbxc")], ['c', 'x', None, 'b', 'x', None, 'a', 'x', None, '']) self.assertEqual(regex.split(r"(?V1)\b", "a b c"), ['', 'a', ' ', 'b', ' ', 'c', '']) self.assertEqual(regex.split(r"(?V1)\m", "a b c"), ['', 'a ', 'b ', 'c']) self.assertEqual(regex.split(r"(?V1)\M", "a b c"), ['a', ' b', ' c', ''])
def test_zerowidth(self): # Issue 3262. self.assertEqual(regex.split(r"\b", "a b"), ['a b']) self.assertEqual(regex.split(r"(?V1)\b", "a b"), ['', 'a', ' ', 'b', '']) # Issue 1647489. self.assertEqual(regex.findall(r"^|\w+", "foo bar"), ['', 'foo', 'bar']) self.assertEqual([m[0] for m in regex.finditer(r"^|\w+", "foo bar")], ['', 'foo', 'bar']) self.assertEqual(regex.findall(r"(?r)^|\w+", "foo bar"), ['bar', 'foo', '']) self.assertEqual([m[0] for m in regex.finditer(r"(?r)^|\w+", "foo bar")], ['bar', 'foo', '']) self.assertEqual(regex.findall(r"(?V1)^|\w+", "foo bar"), ['', 'foo', 'bar']) self.assertEqual([m[0] for m in regex.finditer(r"(?V1)^|\w+", "foo bar")], ['', 'foo', 'bar']) self.assertEqual(regex.findall(r"(?rV1)^|\w+", "foo bar"), ['bar', 'foo', '']) self.assertEqual([m[0] for m in regex.finditer(r"(?rV1)^|\w+", "foo bar")], ['bar', 'foo', '']) self.assertEqual(regex.split("", "xaxbxc"), ['xaxbxc']) self.assertEqual([m for m in regex.splititer("", "xaxbxc")], ['xaxbxc']) self.assertEqual(regex.split("(?r)", "xaxbxc"), ['xaxbxc']) self.assertEqual([m for m in regex.splititer("(?r)", "xaxbxc")], ['xaxbxc']) self.assertEqual(regex.split("(?V1)", "xaxbxc"), ['', 'x', 'a', 'x', 'b', 'x', 'c', '']) self.assertEqual([m for m in regex.splititer("(?V1)", "xaxbxc")], ['', 'x', 'a', 'x', 'b', 'x', 'c', '']) self.assertEqual(regex.split("(?rV1)", "xaxbxc"), ['', 'c', 'x', 'b', 'x', 'a', 'x', '']) self.assertEqual([m for m in regex.splititer("(?rV1)", "xaxbxc")], ['', 'c', 'x', 'b', 'x', 'a', 'x', ''])
def test_unmatched_in_sub(self): # Issue 1519638. self.assertEqual(regex.sub(r"(?V0)(x)?(y)?", r"\2-\1", "xy"), 'y-x') self.assertEqual(regex.sub(r"(?V1)(x)?(y)?", r"\2-\1", "xy"), 'y-x-') self.assertEqual(regex.sub(r"(?V0)(x)?(y)?", r"\2-\1", "x"), '-x') self.assertEqual(regex.sub(r"(?V1)(x)?(y)?", r"\2-\1", "x"), '-x-') self.assertEqual(regex.sub(r"(?V0)(x)?(y)?", r"\2-\1", "y"), 'y-') self.assertEqual(regex.sub(r"(?V1)(x)?(y)?", r"\2-\1", "y"), 'y--')
def find_flags(self, s, quotes, re_verbose, re_version): """Find verbose and Unicode flags.""" new = [] start = 0 verbose_flag = re_verbose version_flag = re_version avoid = quotes + self.groups avoid.sort() if version_flag and verbose_flag: return bool(verbose_flag), version_flag for a in avoid: new.append(s[start:a[0] + 1]) start = a[1] new.append(s[start:]) for m in self._regex_flags.finditer(self._empty.join(new)): if m.group(2): if self._verbose_flag in m.group(2): verbose_flag = True if self._V0 in m.group(2): version_flag = V0 elif self._V1 in m.group(2): version_flag = V1 if version_flag and verbose_flag: break return bool(verbose_flag), version_flag if version_flag else regex.DEFAULT_VERSION
def splitWord(str): str = re.sub("[^A-Za-z]", "", str) words = re.split(r'(?<=[a-z])(?=[A-Z])|(?<=[A-Z])(?=[A-Z][a-z])|(?<=[a-z]A)(?=[A-Z])', str, flags=re.V1) return words
def __init__(self, infile=sys.stdin): """Validate Unicode IPA from file relative to panphon database. infile -- File from which input is taken; by default, STDIN. """ self.ws_punc_regex = re.compile(r'[," \t\n]', re.V1 | re.U) self.ft = panphon.FeatureTable() self._validate_file(infile)
