input: Write a function to repeatedly print "Hello World!" five times. The function should not take any input parameters and should not return any value.
  assert print_hello_world_five_times() is None
  assert print_hello_world_five_times() has printed "Hello World!" five times in the console.
output: def print_hello_world_five_times():
      for _ in range(5):
          print("Hello World!")