title: How do I update a Python package?
body: <p>I'm running Ubuntu 9:10 and a package called M2Crypto is installed (version is 0.19.1). I need to download, build and install the latest version of the M2Crypto package (0.20.2). </p>
  
  <p>The 0.19.1 package has files in a number of locations including (/usr/share/pyshared and /usr/lib/pymodules.python2.6).</p>
  
  <p>How can I completely uninstall version 0.19.1 from my system before installing 0.20.2?</p>