app.py

# Needed modules will be imported and configured
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

# Declaration of the input pin which is connected with the sensor
GPIO_PIN = 4
GPIO.setup(GPIO_PIN, GPIO.IN, pull_up_down = GPIO.PUD_UP)

# Break between the results will be defined here (in seconds)
delayTime = 2.5


# main loop
try:
        while True:
            if GPIO.input(GPIO_PIN) == False:
                print("Detected")
                print('\a')
            # Reset + Delay
            time.sleep(delayTime)

# Scavenging work after the end of the program
except KeyboardInterrupt:
        GPIO.cleanup()