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