input: from typing import List
  
  def sum_array(array: List[float]) -> float:
      """A function that takes in an array of numbers and returns the sum of all the numbers
      >>> sum_array([1, 2, 3, 4, 5])
      15
      >>> sum_array([-1, -2, 3, 4, 5])
      9
      """
      return sum(array)
output:     return sum(array)