input: from typing import List
  
  def square_values(numbers: List[int]) -> List[int]:
      """Given a list of integers, this function uses list comprehension to return a list
      of the squared values of the input list.
      >>> square_values([1, 2, 3, 5, 8, 13])
      [1, 4, 9, 25, 64, 169]
      """
      return [x*x for x in numbers]
output:     return [x*x for x in numbers]