title: limit input to integer only (text crashes PYTHON program)
body: <p>Python novice here, trying to limit quiz input to number 1,2 or 3 only.<br>
  If text is typed in, the program crashes (because text input is not recognised)<br>
  Here is an adaptation of what I have:
  Any help most welcome.</p>
  
  <pre><code>choice = input("Enter Choice 1,2 or 3:")
  if choice == 1:
      print "Your Choice is 1"
  elif choice == 2:
      print "Your Choice is 2"  
  elif choice == 3:
      print "Your Choice is 3"
  elif choice &gt; 3 or choice &lt; 1:
      print "Invalid Option, you needed to type a 1, 2 or 3...."
  </code></pre>