s = difflib.SequenceMatcher(None, 'GHSKWITNIFSI', 'GHSKWAGDITNIFSI')
s.get_matching_blocks()[:-1]
s = difflib.SequenceMatcher(None, 'GHSKWITNIFSI', 'GHSKWITNIFSI')
s.get_matching_blocks()[:-1]
Finding an Insertion in a String