input: Write a function to create a loop that prints each item of a given list with a message. The function should take a list as input and return None. 
  
  assert practical_print(['A', 'B', 'C', 'D']) == None
  assert practical_print(['apple', 'banana', 'cherry']) == None
  assert practical_print([]) == None
  assert practical_print([10, 20, 30]) == None
  assert practical_print(None) == None
output: def practical_print(lst):
      if lst is not None:
          for item in lst:
              print(item)
      return None