!/usr/bin/python
 import RPi.GPIO as GPIO
 import time
 GPIO.setmode(GPIO.BCM)
 TRIG = 23
 ECHO = 24
 print("Distance Measurement In Progress")
 GPIO.setup(TRIG,GPIO.OUT)
 GPIO.setup(ECHO,GPIO.IN)
 GPIO.output(TRIG, False)
 print("Waiting For Sensor To Settle")
 time.sleep(1)
 while (True):
     GPIO.output(TRIG, True)
     time.sleep(0.001)
     GPIO.output(TRIG, False)
     while GPIO.input(ECHO)==0:
         pulse_start = time.time()

     while GPIO.input(ECHO)==1:
         pulse_end = time.time()
         pulse_duration = pulse_end - pulse_start
         distance = pulse_duration * 17150
         distance = round(distance, 2) print("Distance",distance,"cm")

  GPIO.cleanup()