input: 
  def print_numbers():
      """Prints out the numbers from 1 to 50.
      """
      for i in range(1, 51):
          print(i)
  
  # Example usage:
  # >>> print_numbers()
  # 1
  # 2
  # ...
  # 50
  
output:     for i in range(1, 51):
          print(i)