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, 4.0])
      10.0
      >>> sum_list([-1.0, -2.0, -3.0, -4.0])
      -10.0
      >>> sum_list([0.0, 0.1, 0.2, 0.3])
      0.6
      """
output:     total = 0.0
      for num in input_list:
          total += num
      return total