title: Reloading module giving NameError: name 'reload' is not defined
body: <p>I'm trying to reload a module I have already imported in Python 3. I know that you only need to import once and executing the <code>import</code> command again won't do anything. </p>
  
  <p>Executing <code>reload(foo)</code> is giving this error:</p>
  
  <pre><code>Traceback (most recent call last):
      File "(stdin)", line 1, in (module)
      ...
  NameError: name 'reload' is not defined
  </code></pre>
  
  <p>What does the error mean?</p>