lighton.py

import RPi.GPIO as GPIO
import time

ledPin = 3

GPIO.setmode(GPIO.BOARD)
GPIO.setup(ledPin, GPIO.OUT)
GPIO.output(ledPin, GPIO.HIGH)

print("pin 7 should read 3.3v")




lightoff.py

import RPi.GPIO as GPIO
import time

ledPin = 3

GPIO.setmode(GPIO.BOARD)
GPIO.setup(ledPin, GPIO.OUT)
GPIO.output(ledPin, GPIO.LOW)

print("pin 7 should read 0v")