[Docstring-checkins] CVS: dps/test difflib.py,NONE,1.1

[David G. <go...@us...>]

Update of /cvsroot/docstring/dps/test
In directory usw-pr-cvs1:/tmp/cvs-serv11581/dps/test

Added Files:
	difflib.py 
Log Message:
Pre-Python2.2 version as required by tests.

--- NEW FILE: difflib.py ---
#! /usr/bin/env python

"""
Module difflib -- helpers for computing deltas between objects.

Function get_close_matches(word, possibilities, n=3, cutoff=0.6):
    Use SequenceMatcher to return list of the best "good enough" matches.

Function ndiff(a, b):
    Return a delta: the difference between `a` and `b` (lists of strings).

Function restore(delta, which):
    Return one of the two sequences that generated an ndiff delta.

Class SequenceMatcher:
    A flexible class for comparing pairs of sequences of any type.

Class Differ:
    For producing human-readable deltas from sequences of lines of text.
[...1050 lines suppressed...]
    emu
    """
    try:
        tag = {1: "- ", 2: "+ "}[int(which)]
    except KeyError:
        raise ValueError, ('unknown delta choice (must be 1 or 2): %r'
                           % which)
    prefixes = ("  ", tag)
    results = []
    for line in delta:
        if line[:2] in prefixes:
            results.append(line[2:])
    return results

def _test():
    import doctest, difflib
    return doctest.testmod(difflib)

if __name__ == "__main__":
    _test()