Python re.A属性代码示例

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_string_boundaries(self):
        # See http://bugs.python.org/issue10713
        self.assertEqual(re.search(r"\b(abc)\b", "abc").group(1),
                         "abc")
        # There's a word boundary at the start of a string.
        self.assertTrue(re.match(r"\b", "abc"))
        # A non-empty string includes a non-boundary zero-length match.
        self.assertTrue(re.search(r"\B", "abc"))
        # There is no non-boundary match at the start of a string.
        self.assertFalse(re.match(r"\B", "abc"))
        # However, an empty string contains no word boundaries, and also no
        # non-boundaries.
        self.assertIsNone(re.search(r"\B", ""))
        # This one is questionable and different from the perlre behaviour,
        # but describes current behavior.
        self.assertIsNone(re.search(r"\b", ""))
        # A single word-character string has two boundaries, but no
        # non-boundary gaps.
        self.assertEqual(len(re.findall(r"\b", "a")), 2)
        self.assertEqual(len(re.findall(r"\B", "a")), 0)
        # If there are no words, there are no boundaries
        self.assertEqual(len(re.findall(r"\b", " ")), 0)
        self.assertEqual(len(re.findall(r"\b", "   ")), 0)
        # Can match around the whitespace.
        self.assertEqual(len(re.findall(r"\B", " ")), 2) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_ignore_case_set(self):
        self.assertTrue(re.match(r'[19A]', 'A', re.I))
        self.assertTrue(re.match(r'[19a]', 'a', re.I))
        self.assertTrue(re.match(r'[19a]', 'A', re.I))
        self.assertTrue(re.match(r'[19A]', 'a', re.I))
        self.assertTrue(re.match(br'[19A]', b'A', re.I))
        self.assertTrue(re.match(br'[19a]', b'a', re.I))
        self.assertTrue(re.match(br'[19a]', b'A', re.I))
        self.assertTrue(re.match(br'[19A]', b'a', re.I))
        assert '\u212a'.lower() == 'k' # 'K'
        self.assertTrue(re.match(r'[19K]', '\u212a', re.I))
        self.assertTrue(re.match(r'[19k]', '\u212a', re.I))
        self.assertTrue(re.match(r'[19\u212a]', 'K', re.I))
        self.assertTrue(re.match(r'[19\u212a]', 'k', re.I))
        assert '\u017f'.upper() == 'S' # 'ſ'
        self.assertTrue(re.match(r'[19S]', '\u017f', re.I))
        self.assertTrue(re.match(r'[19s]', '\u017f', re.I))
        self.assertTrue(re.match(r'[19\u017f]', 'S', re.I))
        self.assertTrue(re.match(r'[19\u017f]', 's', re.I))
        assert '\ufb05'.upper() == '\ufb06'.upper() == 'ST' # 'ſt', 'st'
        self.assertTrue(re.match(r'[19\ufb05]', '\ufb06', re.I))
        self.assertTrue(re.match(r'[19\ufb06]', '\ufb05', re.I)) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def set_return_handler(self, handler):
        """
        Set ``handler`` as the callback function for undeliverable messages
        that were returned by the server.

        By default, an exception is raised, which will be handled by
        the event loop's exception handler (see :meth:`BaseEventLoop.set_exception_handler <asyncio.BaseEventLoop.set_exception_handler>`).
        If ``handler`` is None, this default behaviour is set.

        :param callable handler: A function to be called when a message is returned.
            The callback will be passed the undelivered message.
        """
        self.basic_return_consumer.set_callback(handler) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_bug_1661(self):
        # Verify that flags do not get silently ignored with compiled patterns
        pattern = re.compile('.')
        self.assertRaises(ValueError, re.match, pattern, 'A', re.I)
        self.assertRaises(ValueError, re.search, pattern, 'A', re.I)
        self.assertRaises(ValueError, re.findall, pattern, 'A', re.I)
        self.assertRaises(ValueError, re.compile, pattern, re.I) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_bug_3629(self):
        # A regex that triggered a bug in the sre-code validator
        re.compile("(?P<quote>)(?(quote))") 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_re_match(self):
        for string in 'a', S('a'):
            self.assertEqual(re.match('a', string).groups(), ())
            self.assertEqual(re.match('(a)', string).groups(), ('a',))
            self.assertEqual(re.match('(a)', string).group(0), 'a')
            self.assertEqual(re.match('(a)', string).group(1), 'a')
            self.assertEqual(re.match('(a)', string).group(1, 1), ('a', 'a'))
        for string in b'a', B(b'a'), bytearray(b'a'), memoryview(b'a'):
            self.assertEqual(re.match(b'a', string).groups(), ())
            self.assertEqual(re.match(b'(a)', string).groups(), (b'a',))
            self.assertEqual(re.match(b'(a)', string).group(0), b'a')
            self.assertEqual(re.match(b'(a)', string).group(1), b'a')
            self.assertEqual(re.match(b'(a)', string).group(1, 1), (b'a', b'a'))
        for a in ("\xe0", "\u0430", "\U0001d49c"):
            self.assertEqual(re.match(a, a).groups(), ())
            self.assertEqual(re.match('(%s)' % a, a).groups(), (a,))
            self.assertEqual(re.match('(%s)' % a, a).group(0), a)
            self.assertEqual(re.match('(%s)' % a, a).group(1), a)
            self.assertEqual(re.match('(%s)' % a, a).group(1, 1), (a, a))

        pat = re.compile('((a)|(b))(c)?')
        self.assertEqual(pat.match('a').groups(), ('a', 'a', None, None))
        self.assertEqual(pat.match('b').groups(), ('b', None, 'b', None))
        self.assertEqual(pat.match('ac').groups(), ('a', 'a', None, 'c'))
        self.assertEqual(pat.match('bc').groups(), ('b', None, 'b', 'c'))
        self.assertEqual(pat.match('bc').groups(""), ('b', "", 'b', 'c'))

        # A single group
        m = re.match('(a)', 'a')
        self.assertEqual(m.group(0), 'a')
        self.assertEqual(m.group(0), 'a')
        self.assertEqual(m.group(1), 'a')
        self.assertEqual(m.group(1, 1), ('a', 'a'))

        pat = re.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?')
        self.assertEqual(pat.match('a').group(1, 2, 3), ('a', None, None))
        self.assertEqual(pat.match('b').group('a1', 'b2', 'c3'),
                         (None, 'b', None))
        self.assertEqual(pat.match('ac').group(1, 'b2', 3), ('a', None, 'c')) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_getlower(self):
        import _sre
        self.assertEqual(_sre.getlower(ord('A'), 0), ord('a'))
        self.assertEqual(_sre.getlower(ord('A'), re.LOCALE), ord('a'))
        self.assertEqual(_sre.getlower(ord('A'), re.UNICODE), ord('a'))
        self.assertEqual(_sre.getlower(ord('A'), re.ASCII), ord('a'))

        self.assertEqual(re.match("abc", "ABC", re.I).group(0), "ABC")
        self.assertEqual(re.match(b"abc", b"ABC", re.I).group(0), b"ABC")
        self.assertEqual(re.match("abc", "ABC", re.I|re.A).group(0), "ABC")
        self.assertEqual(re.match(b"abc", b"ABC", re.I|re.L).group(0), b"ABC") 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_flags(self):
        for flag in [re.I, re.M, re.X, re.S, re.A, re.U]:
            self.assertTrue(re.compile('^pattern$', flag))
        for flag in [re.I, re.M, re.X, re.S, re.A, re.L]:
            self.assertTrue(re.compile(b'^pattern$', flag)) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_inline_flags(self):
        # Bug #1700
        upper_char = '\u1ea0' # Latin Capital Letter A with Dot Below
        lower_char = '\u1ea1' # Latin Small Letter A with Dot Below

        p = re.compile(upper_char, re.I | re.U)
        q = p.match(lower_char)
        self.assertTrue(q)

        p = re.compile(lower_char, re.I | re.U)
        q = p.match(upper_char)
        self.assertTrue(q)

        p = re.compile('(?i)' + upper_char, re.U)
        q = p.match(lower_char)
        self.assertTrue(q)

        p = re.compile('(?i)' + lower_char, re.U)
        q = p.match(upper_char)
        self.assertTrue(q)

        p = re.compile('(?iu)' + upper_char)
        q = p.match(lower_char)
        self.assertTrue(q)

        p = re.compile('(?iu)' + lower_char)
        q = p.match(upper_char)
        self.assertTrue(q) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_bug_13899(self):
        # Issue #13899: re pattern r"[\A]" should work like "A" but matches
        # nothing. Ditto B and Z.
        with self.assertWarns(DeprecationWarning):
            self.assertEqual(re.findall(r'[\A\B\b\C\Z]', 'AB\bCZ'),
                             ['A', 'B', '\b', 'C', 'Z']) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_basic_re_sub(self):
        self.assertTypedEqual(re.sub('y', 'a', 'xyz'), 'xaz')
        self.assertTypedEqual(re.sub('y', S('a'), S('xyz')), 'xaz')
        self.assertTypedEqual(re.sub(b'y', b'a', b'xyz'), b'xaz')
        self.assertTypedEqual(re.sub(b'y', B(b'a'), B(b'xyz')), b'xaz')
        self.assertTypedEqual(re.sub(b'y', bytearray(b'a'), bytearray(b'xyz')), b'xaz')
        self.assertTypedEqual(re.sub(b'y', memoryview(b'a'), memoryview(b'xyz')), b'xaz')
        for y in ("\xe0", "\u0430", "\U0001d49c"):
            self.assertEqual(re.sub(y, 'a', 'x%sz' % y), 'xaz')

        self.assertEqual(re.sub("(?i)b+", "x", "bbbb BBBB"), 'x x')
        self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y'),
                         '9.3 -3 24x100y')
        self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', 3),
                         '9.3 -3 23x99y')

        self.assertEqual(re.sub('.', lambda m: r"\n", 'x'), '\\n')
        self.assertEqual(re.sub('.', r"\n", 'x'), '\n')

        s = r"\1\1"
        self.assertEqual(re.sub('(.)', s, 'x'), 'xx')
        self.assertEqual(re.sub('(.)', re.escape(s), 'x'), s)
        self.assertEqual(re.sub('(.)', lambda m: s, 'x'), s)

        self.assertEqual(re.sub('(?P<a>x)', '\g<a>\g<a>', 'xx'), 'xxxx')
        self.assertEqual(re.sub('(?P<a>x)', '\g<a>\g<1>', 'xx'), 'xxxx')
        self.assertEqual(re.sub('(?P<unk>x)', '\g<unk>\g<unk>', 'xx'), 'xxxx')
        self.assertEqual(re.sub('(?P<unk>x)', '\g<1>\g<1>', 'xx'), 'xxxx')

        self.assertEqual(re.sub('a',r'\t\n\v\r\f\a\b\B\Z\a\A\w\W\s\S\d\D','a'),
                         '\t\n\v\r\f\a\b\\B\\Z\a\\A\\w\\W\\s\\S\\d\\D')
        self.assertEqual(re.sub('a', '\t\n\v\r\f\a', 'a'), '\t\n\v\r\f\a')
        self.assertEqual(re.sub('a', '\t\n\v\r\f\a', 'a'),
                         (chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7)))

        self.assertEqual(re.sub('^\s*', 'X', 'test'), 'Xtest') 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_ignore_case_range(self):
        # Issues #3511, #17381.
        self.assertTrue(re.match(r'[9-a]', '_', re.I))
        self.assertIsNone(re.match(r'[9-A]', '_', re.I))
        self.assertTrue(re.match(br'[9-a]', b'_', re.I))
        self.assertIsNone(re.match(br'[9-A]', b'_', re.I))
        self.assertTrue(re.match(r'[\xc0-\xde]', '\xd7', re.I))
        self.assertIsNone(re.match(r'[\xc0-\xde]', '\xf7', re.I))
        self.assertTrue(re.match(r'[\xe0-\xfe]', '\xf7', re.I))
        self.assertIsNone(re.match(r'[\xe0-\xfe]', '\xd7', re.I))
        self.assertTrue(re.match(r'[\u0430-\u045f]', '\u0450', re.I))
        self.assertTrue(re.match(r'[\u0430-\u045f]', '\u0400', re.I))
        self.assertTrue(re.match(r'[\u0400-\u042f]', '\u0450', re.I))
        self.assertTrue(re.match(r'[\u0400-\u042f]', '\u0400', re.I))
        self.assertTrue(re.match(r'[\U00010428-\U0001044f]', '\U00010428', re.I))
        self.assertTrue(re.match(r'[\U00010428-\U0001044f]', '\U00010400', re.I))
        self.assertTrue(re.match(r'[\U00010400-\U00010427]', '\U00010428', re.I))
        self.assertTrue(re.match(r'[\U00010400-\U00010427]', '\U00010400', re.I))

        assert '\u212a'.lower() == 'k' # 'K'
        self.assertTrue(re.match(r'[J-M]', '\u212a', re.I))
        self.assertTrue(re.match(r'[j-m]', '\u212a', re.I))
        self.assertTrue(re.match(r'[\u2129-\u212b]', 'K', re.I))
        self.assertTrue(re.match(r'[\u2129-\u212b]', 'k', re.I))
        assert '\u017f'.upper() == 'S' # 'ſ'
        self.assertTrue(re.match(r'[R-T]', '\u017f', re.I))
        self.assertTrue(re.match(r'[r-t]', '\u017f', re.I))
        self.assertTrue(re.match(r'[\u017e-\u0180]', 'S', re.I))
        self.assertTrue(re.match(r'[\u017e-\u0180]', 's', re.I))
        assert '\ufb05'.upper() == '\ufb06'.upper() == 'ST' # 'ſt', 'st'
        self.assertTrue(re.match(r'[\ufb04-\ufb05]', '\ufb06', re.I))
        self.assertTrue(re.match(r'[\ufb06-\ufb07]', '\ufb05', re.I)) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_getlower(self):
        import _sre
        self.assertEqual(_sre.getlower(ord('A'), 0), ord('a'))
        self.assertEqual(_sre.getlower(ord('A'), re.LOCALE), ord('a'))
        self.assertEqual(_sre.getlower(ord('A'), re.UNICODE), ord('a'))

        self.assertEqual(re.match("abc", "ABC", re.I).group(0), "ABC")
        self.assertEqual(re.match(b"abc", b"ABC", re.I).group(0), b"ABC") 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_inline_flags(self):
        # Bug #1700
        upper_char = chr(0x1ea0) # Latin Capital Letter A with Dot Bellow
        lower_char = chr(0x1ea1) # Latin Small Letter A with Dot Bellow

        p = re.compile(upper_char, re.I | re.U)
        q = p.match(lower_char)
        self.assertTrue(q)

        p = re.compile(lower_char, re.I | re.U)
        q = p.match(upper_char)
        self.assertTrue(q)

        p = re.compile('(?i)' + upper_char, re.U)
        q = p.match(lower_char)
        self.assertTrue(q)

        p = re.compile('(?i)' + lower_char, re.U)
        q = p.match(upper_char)
        self.assertTrue(q)

        p = re.compile('(?iu)' + upper_char)
        q = p.match(lower_char)
        self.assertTrue(q)

        p = re.compile('(?iu)' + lower_char)
        q = p.match(upper_char)
        self.assertTrue(q) 

# 需要导入模块: import re [as 别名]
# 或者: from re import A [as 别名]
def test_bug_13899(self):
        # Issue #13899: re pattern r"[\A]" should work like "A" but matches
        # nothing. Ditto B and Z.
        self.assertEqual(re.findall(r'[\A\B\b\C\Z]', 'AB\bCZ'),
                         ['A', 'B', '\b', 'C', 'Z'])