import RPi.GPIO as GPIO
import time
# for GPIO numbering, choose BCM  
#GPIO.setmode(GPIO.BCM)  
  
# or, for pin numbering, choose BOARD  
GPIO.setmode(GPIO.BOARD)  

GPIO.setmode(GPIO.BOARD)  # sets numbering system of GPIO pins
channel1 = 15  # Replace MY_BOARD_PIN_ID with your actual pin number
channel2 = 16  # Replace MY_BOARD_PIN_ID with your actual pin number

GPIO.setup(channel1, GPIO.IN)  # set the GPIO pin as an input
GPIO.setup(channel2, GPIO.IN)  # set the GPIO pin as an input

# then some code where you read the input as many times as needed:
while(True):
	value1 = GPIO.input(channel1)
	value2 = GPIO.input(channel2)
	print("1:%d\n"%value1)
	print("2:%d\n"%value2)
	time.sleep(0.5)