title: Deactivate code in python without changing indentation or adding comments
body: <p>I suspect the answer to this question will be a big NO!
  But here goes. </p>
  
  <p>Is there a way to deactivate (temporarily) long code snippets without having to comment every line or putting an if FALSE: and indenting every line?</p>
  
  <p>As an example, say I have the code</p>
  
  <pre><code>for A in range(1,LargeNumber):
      DoSuff(A)
      ###DO Mode stuff
      ###....
      Done(A)
  </code></pre>
  
  <p>However, since I'm still developing the code I don't want this lengthy loop to run. My options are as far as I'm aware:</p>
  
  <p>Comment away </p>
  
  <pre><code>#for A in range(1,LargeNumber):
      #DoSuff(A)
      ####DO Mode stuff
      ####....
      #Done(A)
  </code></pre>
  
  <p>or wrap in a <code>false</code> if-statement</p>
  
  <pre><code>if False:
      for A in range(1,LargeNumber):
          DoSuff(A)
          ###DO Mode stuff
          ###....
          Done(A)
  </code></pre>
  
  <p>both of which require me to manipulate every line I want to deactivate.</p>
  
  <p>Is there some more clever way of doing this without having to change the indentation or adding comments at every line. (Except maybe putting <code>LargeNumber=0</code> here.)</p>