Changes by Benjamin Peterson benja...@python.org:
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resolution: - duplicate
status: open - closed
superseder: - dreadful performance in difflib: ndiff and HtmlDiff
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11740
Filip Gruszczyński grusz...@gmail.com added the comment:
The culprit seems to be Differ._fancy_replace. There is a nasty quadratic loop
there, that has pretty complex internal code. I have done a quick a fix, that
makes example run below a second at the expense of not calling _fancy_replace
New submission from Michael O'Rourke mkoro...@adobe.com:
If you try to difference the attached files with difflib and a html difference
it take 10 minutes or more. In comparison other differencing tools like windiff
and araxis merge will show the diff within a second.
Example code I'm using
Changes by Filip Gruszczyński grusz...@gmail.com:
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nosy: +gruszczy
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11740
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Python-bugs-list
ysj.ray ysj@gmail.com added the comment:
Reproduced in 3.3
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components: +Library (Lib) -None
nosy: +ysj.ray
versions: +Python 3.1, Python 3.2, Python 3.3
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue11740
