title: how to make a file act as a python module
body: <p>I want to make a file that is consisted of 3 python programs.
  but, when I want to access one of the there files from one of them, it cant find the folder.</p>
  
  <p>I made a <strong>init</strong> python file in it so python can recognize it as a module</p>
  
  <p>my folder struct:</p>
  
  <pre><code>dlgo/
          __init__.py
          goboard_slow.py
          gotypes.py
  </code></pre>
  
  <p>my goboard_slow:</p>
  
  <pre><code>from dlgo.gotypes import player
  </code></pre>
  
  <p>error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Users\asus\Desktop\dlgo\goboard_slow.py", line 2, in &lt;module&gt;
      from dlgo.gotypes import player
  ImportError: No module named 'dlgo'
  </code></pre>