example python script to switch on GPIO pin on Raspi

switchOnGPIO.py

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BOARD) # Raspi board GPIO Pin Number

GPIO.setup(11, GPIO.OUT) # Output pin is GPIO Pin 17

# Initial state for LEDs:
print("Testing GPIO Pin11 out, Press CTRL+C to exit")

try:
     print("Set GPIO 17 HIGH")
     GPIO.output(11, GPIO.HIGH)
     time.sleep(5)               
except KeyboardInterrupt: # If CTRL+C is pressed, exit cleanly:
   print("Keyboard interrupt")

except:
   print("some error") 

finally:
   print("clean up") 
   GPIO.cleanup() # cleanup all GPIO