text: import time
  from clewareampel import ClewareAmpel
  
  ampel = ClewareAmpel()
  ampel.all_on()
  time.sleep(1)
  ampel.green_only()
  time.sleep(1)
  ampel.yellow_only()
  time.sleep(1)
  ampel.red_only()
  time.sleep(1)
  ampel.green_on()
  time.sleep(1)
  ampel.red_off()
  time.sleep(1)
  ampel.all_off()
  