input: Write a function that generates a Python list comprehension to get the squared values of a given list of integers.
  assert squared_values_list([1, 2, 3, 5, 8, 13]) == [1, 4, 9, 25, 64, 169]
  assert squared_values_list([0, -1, -2, 3, 4]) == [0, 1, 4, 9, 16]
  assert squared_values_list([]) == []
  assert squared_values_list([-5, -4, -3, -2, -1]) == [25, 16, 9, 4, 1]
output: return [x**2 for x in lst]