title: Recursion countdown
body: <p>I'm working on this recursion function that takes in a number and counts down. So the first attempt gave me 0 followed by 'None' n times, my Second attempt threw a RecursionError:maximum recursion depth exceeded in comparison.. please help, heres my code:</p>
  
  <pre><code>def count_down(n):
    if n &lt;= 0:
      return n
    else:
      print(count_down(n-1))
  
  print(count_down(10))
  
  def count_down(n):
    if n &lt;= 0:
      return n
    else:
      return(count_down(n) - 1)
  
  print(count_down(10))
  </code></pre>