pytoolbox.regex module

pytoolbox.regex.embed_in_regex(string, regex_parts, index, as_string=True)

Example usage

>>> embed_in_regex('L', ['[a-z]', '[a-z]'], 0)
(0, 'L[a-z]')
>>> embed_in_regex('L', ['[a-z]', '[a-z]'], 1)
(1, '[a-z]L')
>>> embed_in_regex('L', ['[a-z]', '[a-z]'], 1, as_string=False)
(1, ['[a-z]', 'L'])

pytoolbox.regex.findall_partial(string, regex_parts)

Example usage

>>> [i for s, r, i in findall_partial(':', TIME_REGEX_PARTS)]
[2, 5]
>>> [embed_in_regex(s, r, i) for s, r, i in findall_partial('12:15:2', TIME_REGEX_PARTS)]
[(0, '12:15:2[0-9]')]
>>> [embed_in_regex(s, r, i) for s, r, i in findall_partial('18:2', TIME_REGEX_PARTS)]
[(0, '18:2[0-9]:[0-5][0-9]'), (3, '[0-2][0-9]:18:2[0-9]')]
>>> [embed_in_regex(s, r, i) for s, r, i in findall_partial('59:1', TIME_REGEX_PARTS)]
[(3, '[0-2][0-9]:59:1[0-9]')]

pytoolbox.regex.from_path_patterns(patterns, regex=False)

Return patterns compiled to regular expressions, if necessary.

If regex is set to False, then any string pattern will be converted from the unix-style wildcard to the regular expression equivalent using fnatmch.translate().

Example usage

>>> from pytoolbox.unittest import asserts
>>> asserts.list_equal(
...     [r.pattern for r in from_path_patterns('*.txt')],
...     ['(?s:.*\\.txt)\\Z'])
>>> asserts.list_equal(
...     [r.pattern for r in from_path_patterns(['text', 'something*'], '*.py')],
...     ['text', 'something*'])
>>> asserts.list_equal(
...     [r.pattern for r in from_path_patterns([re.compile('a?c'), 'fo?'])],
...     ['a?c', '(?s:fo.)\\Z'])
>>> asserts.list_equal(
...     [r.pattern for r in from_path_patterns([re.compile('a?c'), 'foo?'], regex=True)],
...     ['a?c', 'foo?'])