input: from typing import List
  
  def find_smallest_number(numbers: List[int]) -> int:
      """ Find the smallest number in the given list of integers.
      >>> find_smallest_number([5, 4, 12, 17, 9])
      4
      >>> find_smallest_number([-1, -5, -3, 0, 2])
      -5
      """
      smallest = numbers[0]
      for num in numbers:
          if num < smallest:
              smallest = num
      return smallest
output:     smallest = numbers[0]
      for num in numbers:
          if num < smallest:
              smallest = num
      return smallest