<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">def blast_off(n):
   """Input: a non-negative int
   Counts down from n to Blast-Off! 
   """
   if (n == 0):
      print("BLAST OFF!")
   else:
      print(n)
      blast_off(n-1)
      
blast_off(10)
</pre></body></html>