ButtonChecker.py

import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)

while True:
       input_state = GPIO.input(23)
       if input_state == True:
              print('Button is NOT Pressed')
              time.sleep(0.2)
       elif input_state == False:
              print('Button is Pressed')
              time.sleep(0.2)