input: Write a python function to create a new list with the squares of even numbers from an input list using list comprehension.
  assert square_even_numbers([1, 2, 3, 4, 5]) == [4, 16]
  assert square_even_numbers([2, 4, 6, 8]) == [4, 16, 36, 64]
  assert square_even_numbers([1, 3, 5, 7]) == []
output: def square_even_numbers(lst):
      return [x**2 for x in lst if x % 2 == 0]