Python implementation of the patiencediff algorithm.
Project description
This package contains the implementation of the patiencediff algorithm, as first described by Bram Cohen.
Like Python’s difflib, this module provides both a convience unified_diff function for the generation of unified diffs of text files as well as a SequenceMatcher that can be used on arbitrary lists.
Patiencediff provides a good balance of performance, nice output for humans, and implementation simplicity.
The code in this package was extracted from the Bazaar code base.
The package comes with two implementations:
A Python implementation (_patiencediff_py.py); this implementation only requires a Python interpreter and is the more readable version of the two
A C implementation implementation (_patiencediff_c.c); this implementation is faster, but requires a C compiler and is less readable
Usage
To invoke patiencediff from the command-line:
python -m patiencediff file_a file_b
Or from Python:
>>> import patiencediff >>> print ''.join(patiencediff.unified_diff( ... ['a\n', 'b\n', 'b\n', 'c\n'], ... ['a\n', 'c\n', 'b\n'])) --- +++ @@ -1,4 +1,3 @@ a +c b -b -c
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