input: Write a python function to display the current time in the format "HH:MM:SS AM/PM", updating every second.
  assert display_time_format() == "12:00:00 AM"  # Example output for midnight
  assert display_time_format() == "01:15:30 PM"  # Example output for 1:15:30 PM
  assert display_time_format() == "11:59:59 PM"  # Example output for one second before midnight
output: def display_time_format():
      from datetime import datetime
      import time
      
      while True:
          current_time = datetime.now().strftime('%I:%M:%S %p')
          print(current_time)
          time.sleep(1)