title: How to find out if I have installed a Python module in Linux?
body: <p>I tried to install a Python module by typing: sudo python setup.py install
  After I typed this command I got a lot of output to the screen.
  The lest few lines are bellow:</p>
  
  <pre><code>writing manifest file 'scikits.audiolab.egg-info/SOURCES.txt'
  removing '/usr/lib/python2.5/site-packages/scikits.audiolab-0.10.2-py2.5.egg-info' (and everything under it)
  Copying scikits.audiolab.egg-info to /usr/lib/python2.5/site-packages/scikits.audiolab-0.10.2-py2.5.egg-info
  Installing /usr/lib/python2.5/site-packages/scikits.audiolab-0.10.2-py2.5-nspkg.pth
  running install_scripts
  </code></pre>
  
  <p>So, there were nothing suspicious. But when I tried to use the module from the Python:</p>
  
  <pre><code>import pyaudiolab
  </code></pre>
  
  <p>I see that Python does not find the module:</p>
  
  <pre><code>Traceback (most recent call last):  
  File "test.py", line 1, in &lt;module&gt;
      import pyaudiolab ImportError: No module named pyaudiolab
  </code></pre>
  
  <p>How can I found out what went wrong? As a result of the installation I get a new directory:
  /usr/lib/python2.5/site-packages (so something happened) but I still cannot use the module. Can anybody help me with that?</p>