title: reload (update) a module file in the interpreter
body: <p>Let's say I have this python script <code>script.py</code> and I load it in the interpreter by typing</p>
  
  <pre><code>import script
  </code></pre>
  
  <p>and then I execute my function by typing:</p>
  
  <pre><code>script.testFunction(testArgument)
  </code></pre>
  
  <p>OK so far so good, but when I change <code>script.py</code>, if I try to import again the script doesn't update. I have to exit from the interpreter, restart the interpreter, and then import the new version of the script for it to work.</p>
  
  <p>What should I do instead?</p>