input: def filter_even_numbers(lst):
      """ Filter out even numbers from the given list of integers.
      >>> filter_even_numbers([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])
      [2, 4, 6, 8, 10]
      >>> filter_even_numbers([1, 3, 5, 7, 9])
      []
      """
      even_numbers = [num for num in lst if num % 2 == 0]
      return even_numbers
output:     even_numbers = [num for num in lst if num % 2 == 0]
      return even_numbers