Unfortunately Debian 6 doesn’t let you upgrade to python 2.7.  This is a problem for me because 2.7 has added check_output function to subprocess.  If you see the following errors: Traceback (most recent call last): File “/usr/local/bin/keyupdate.py”, line 7, in <module> from subprocess import Popen, PIPE, check_output ImportError: cannot import name check_output   That means