I'm trying to use difflib to compare two files, and it's not
producing very useful results. When comparing two lines where
only a few characters have changed, it usually seems to decide
that a line was deleted/inserted/replaced rather than changed.
Here's how I'm using it:
#!/usr/bin/python
import sys,difflib
fromlines = [l.rstrip('\n') for l in open(sys.argv[1]).readlines()]
tolines = [l.rstrip('\n') for l in open(sys.argv[2]).readlines()]
print difflib.HtmlDiff().make_file(fromlines,tolines)
In my particular usage, no lines have ever been
inserted/deleted, so perhaps I should be running diffs on
individual lines instead? If I do that, I can't figure out how
to generate HTML output.
Is there a way to tell the differ to try harder to match lines?
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