input: Write a python function to display all the even elements from a given list.
  assert display_even_elements([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == [2, 4, 6, 8, 10]
  assert display_even_elements([10, 21, 32, 43, 54, 65, 76, 87, 98]) == [10, 32, 54, 76, 98]
  assert display_even_elements([5, 15, 25, 35, 45]) == []
output: def display_even_elements(lst):
      return [x for x in lst if x % 2 == 0]