input: Write a function to create a loop in Python that prints each item of the given list with a message. The function should take a list as input and return None.
  
  assert print_each_item(['A', 'B', 'C', 'D']) is None
  
  When the function `print_each_item(['A', 'B', 'C', 'D'])` is called, the output will be:
  The item is: A
  The item is: B
  The item is: C
  The item is: D
output: def print_each_item(lst):
      for item in lst:
          print(f"The item is: {item}")