difflib_junk.py

#!/usr/bin/env python


from difflib import SequenceMatcher


def show_results(s):
    i, j, k = s.find_longest_match(0, 5, 0, 9)
    print ' i = %d' % i
    print ' j = %d' % j
    print ' k = %d' % k
    print ' A[i:i+k] = %r' % A[i:i + k]
    print ' B[j:j+k] = %r' % B[j:j + k]

A = " abcd"
B = "abcd abcd"

print 'A = %r' % A
print 'B = %r' % B

print '\nWithout junk detection:'
show_results(SequenceMatcher(lambda x: x == " ", A, B))