input: 
  def top_three(numbers: List[int]) -> List[int]:
      """ Returns the top 3 largest numbers from a given list of integers.
      >>> top_three([7, 13, 5, 8, 50, 11, 64, 48])
      [64, 50, 48]
      >>> top_three([1, 2, 3, 4, 5])
      [5, 4, 3]
      >>> top_three([3, 1, 2])
      [3, 2, 1]
      """
      sorted_numbers = sorted(numbers, reverse=True)
      return sorted_numbers[:3]
  
output:     sorted_numbers = sorted(numbers, reverse=True)
      return sorted_numbers[:3]