I've received this error a few times when working with pytz:
Error reading file '/usr/share/xml/iso-codes/iso_3166.xml'
In short, install the 'iso-codes' package in Ubuntu/Debian. I'm sure this is covered in the manual that I didn't read, but I'm sure others didn't read it too.
apt-get install iso-codes
This entry is from my tutorial section and was written on June 17, 2009. It's been tagged with python and pytz and ubuntu.
"So far we only got one case." -Yan-Shih bidding on auction wine. (about 1 week, 4 days ago)