__TOC__
== Background ==
When you create a range in relax, it is created as an xrange object.<br>
== Change bug in dateutil.rrule ==
The recommended way is to update your version of the '''python-dateutil''' package.
<source lang="bash">
sudo pip install python-dateutil --upgrade
</source>
If you by some means need to stay with the current versions, you can try.
<source lang="bash">
bash
Test if it worked
<source lang="bash">
cat <<'EOF' > relax_test.py
from pylab import *