title: "Python module not found" error on installed module
body: <p>I am on Mac 10.6.8 with MAMP server installed.
  I have installed both Scrapy and MySQLdb module under Python 2.6</p>
  
  <p>When i import MySQLdb module from a python command line or in another project i see no error and it's working as expected. However when i import MySQLdb module in Scrapy project i get import error ("ImportError: No module named MySQLdb").</p>
  
  <p>I am not a Python guru and such behavior is quite unexpected. 
  Why is that happening ? How this can be fixed ?</p>
  
  <pre><code>$ which python
  /opt/local/bin/python (which is a symlink to "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin/python2.6")
  </code></pre>
  
  <hr>
  
  <pre><code>$ which scrapy
  /usr/local/bin/scrapy
  </code></pre>