input: 
  def fizz_buzz():
      """ Print the numbers from 1 to 50, but for multiples of 3 print "Fizz" instead 
      of the number, for multiples of 5 print "Buzz" instead of the number, and for 
      multiples of both 3 and 5 print "FizzBuzz".
      >>> fizz_buzz()
      1
      2
      Fizz
      4
      Buzz
      ...
      14
      FizzBuzz
      16
      ...
      49
      Buzz
      """
  
output:     for i in range(1, 51):
          if i % 3 == 0 and i % 5 == 0:
              print("FizzBuzz")
          elif i % 3 == 0:
              print("Fizz")
          elif i % 5 == 0:
              print("Buzz")
          else:
              print(i)