83 lines
1.5 KiB
ReStructuredText
83 lines
1.5 KiB
ReStructuredText
:mod:`ure` -- regular expressions
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=================================
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.. module:: ure
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:synopsis: regular expressions
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This module implements regular expression operations. Regular expression
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syntax supported is a subset of CPython ``re`` module (and actually is
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a subset of POSIX extended regular expressions).
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Supported operators are:
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``'.'``
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Match any character.
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``'[]'``
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Match set of characters. Individual characters and ranges are supported.
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``'^'``
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``'$'``
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``'?'``
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``'*'``
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``'+'``
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``'??'``
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``'*?'``
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``'+?'``
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Counted repetitions (``{m,n}``), more advanced assertions, named groups,
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etc. are not supported.
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Functions
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---------
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.. function:: compile(regex)
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Compile regular expression, return ``regex`` object.
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.. function:: match(regex, string)
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Match ``regex`` against ``string``. Match always happens from starting
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position in a string.
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.. function:: search(regex, string)
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Search ``regex`` in a ``string``. Unlike ``match``, this will search
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string for first position which matches regex (which still may be
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0 if regex is anchored).
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.. data:: DEBUG
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Flag value, display debug information about compiled expression.
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Regex objects
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-------------
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Compiled regular expression. Instances of this class are created using
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``ure.compile()``.
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.. method:: regex.match(string)
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.. method:: regex.search(string)
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.. method:: regex.split(string, max_split=-1)
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Match objects
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-------------
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Match objects as returned by ``match()`` and ``search()`` methods.
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.. method:: match.group([index])
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Only numeric groups are supported.
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