input: 
  def sum_list(input_list: List[float]) -> float:
      """
      Returns the sum of the items in the given list.
  
      >>> sum_list([1.0, 2.0, 3.0])
      6.0
      >>> sum_list([0.5, -0.5, 0.5])
      0.5
      >>> sum_list([])
      0.0
      """
  
      total = 0
      for number in input_list:
          total += number
      return total
  
output:     total = 0
      for number in input_list:
          total += number
      return total