title: Importing modules from parent folder
body: <p>I am running Python 2.5.</p>
  
  <p>This is my folder tree:</p>
  
  <pre><code>ptdraft/
    nib.py
    simulations/
      life/
        life.py
  </code></pre>
  
  <p>(I also have <code>__init__.py</code> in each folder, omitted here for readability)</p>
  
  <p>How do I import the <code>nib</code> module from inside the <code>life</code> module? I am hoping it is possible to do without tinkering with sys.path.</p>
  
  <p>Note: The main module being run is in the <code>ptdraft</code> folder.</p>