input: Write a function to print all even numbers from a given list of integers. 
  
  def print_even_numbers(my_list):
      for num in my_list:
          if num % 2 == 0:
              print(num)
  
  assert print_even_numbers([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])==None
  assert print_even_numbers([2, 4, 6, 8, 10])==None
  assert print_even_numbers([1, 3, 5, 7, 9])==None
  assert print_even_numbers([1, 2, 3, 4])==None
  assert print_even_numbers([])==None
output: def print_even_numbers(my_list):
      for num in my_list:
          if num % 2 == 0:
              print(num)