title: Unable to start a django server in my computer
body: <p>I exported the path of my django project by</p>
  
  <pre><code>$ export DJANGO_SETTINGS_MODULE=/Users/masi/Documents/Test/djangobook/ch3.settings
  </code></pre>
  
  <p>I run unsuccessfully</p>
  
  <pre><code>$ django-admin.py runserver 
  Error: Could not import settings '/Users/masi/Documents/Test/djangobook/ch3.settings' (Is it on sys.path? Does it have syntax errors?): Import by filename is not supported.
  </code></pre>
  
  <p><strong>How can you start Django server without the error message?</strong></p>