staale/python-xlsx — pull request #16 by gerarde (2012-08-10 21:36:00+00:00)
Title: Performance improvements using cElementTree instead of minidom

Here are some changes which swap out minidom for cElementTree to gain performance. Performance is several times faster in my tests.

Judging from your testsuite's use of assertIs, I'm assuming you're using Python 2.7, so everything will work right away.

However, if you're using Python 2.4 or earlier, cElementTree needs to be downloaded and installed into the local python installation - find it at http://effbot.org/zone/celementtree.htm#downloads.