title: Py.test No module named *
body: <p>I have a folder structure like this</p>
  
  <pre><code>App
  --App
    --app.py       
  --Docs
  --Tests
    --test_app.py
  </code></pre>
  
  <p>In my <code>test_app.py file</code>, I have a line to import my app module. When I run py.test on the root folder, I get this error about no module named app. How should I configure this?</p>