unmatcher tries to solve the following problem:
Given a regular expression, find any string that matches the expression.
Why? Mostly just because. But one possible application is to generate test data for string processing functions.
Status
Most typical elements of regexes are supported:
multipliers: *, +
capture groups: |, ( ) (including backreferences)
character classes (\d|\w|\s etc.) and character sets ([])
API
unmatcher module exposes a single reverse function. It takes a regular expression - either in text or compiled form - and returns a random string that matches it:
>>> import unmatcher >>> print unmatcher.reverse(r'\d') 7
Additional arguments can be provided, specifying predefined values for capture groups inside the expression. Use positional arguments for numbered groups ('\1', etc.):
>>> import unmatcher >>> print unmatcher.reverse(r'<(\w+)>.*</\1>', 'h1') <h1>1NLNVlrOT4YGyHV3vD7cHvrAl8OHVWDPKgmaE4gUsctboyFYUx</h1>
and keyword arguments for named groups:
>>> import unmatcher
>>> print unmatcher.reverse('(?P<foo>\w+)__(?P=foo)', foo='bar')
bar__bar
Note that a predefined value is not validated against actual subexpression for the capture group.
1 maintainer
Release files for unmatcher 0.1.4
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
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| unmatcher-0.1.4.tar.gz | 7.4 kB | Details |
Release files / unmatcher-0.1.4.tar.gz
| Download URL | unmatcher-0.1.4.tar.gz |
|---|---|
| Size | 7.4 kB |
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