import time
 import RPi.GPIO

 # Initializing the GPIO pins. The numbering using is board.
 RPi.GPIO.setmode(RPi.GPIO.BOARD)

 # Configuring the GPIO pin number 8 to be an output pin.
 RPi.GPIO.setup(8, RPi.GPIO.OUT)

 print("Running Motor.")
 # Running the motor by changing the GPIO output pin state to high.
 RPi.GPIO.output(8, RPi.GPIO.HIGH)

 # Leave the motor running for 3 seconds.
 time.sleep(3)

 # Stop the motor by changing the GPIO output pin state back to low.
 RPi.GPIO.output(8, RPi.GPIO.LOW)

 # cleanup all GPIO pins.
 print("Clean Up GPIO.")
 RPi.GPIO.cleanup()