title: count down from a specific number from a number inputted in python
body: <p>basically I want var2 to make the bottle drop by that number e.g. when I type in 10 then 2 I want the bottle to count down in 2s like 10 8 6 4 2 0</p>
  
  <pre><code>var = raw_input(" Enter bottle number ")
  var2 = raw_input(" Enter how many bottle taken down ")
  
  bottle_number = int(var)
  bottle_down = int(var2)
  
  countdown = ""                             
  
  while bottle_number &gt; 0:                      
  
      print bottle_number, "bottles of beer on the wall,", bottle_number, "bottles of beer."
      print "Take one down and pass it around,", bottle_number - 1, "bottles of beer on the wall."
      print " "
      countdown = bottle_number - 1
      bottle_number = countdown
  
  
  if bottle_number == 0:                        
  
      print """
      No more bottles of beer on the wall, no more bottles of beer.
      """
  </code></pre>