import RPi.GPIO as GPIO  # Import library for GPIO (pin) access
GPIO.setmode(GPIO.BOARD) # Specify that we use the BOARD numbers (pin numbers 1-26 on the connector)
GPIO.setwarnings(False)  # Disable the warning "This channel is already in use"
import time

GPIO.setup(22, GPIO.IN)  # Configure pin 22 as an input (IN)

while True:
    x = GPIO.input(22)   # Read pin 22 and store 1 (high) or 0 (low) in x
    print(x)             # print x. It will print either 1 or 0
    time.sleep(0.25)     # wait 0.25 seconds before doing the loop again