buttons_py3.py

import time
from time import sleep
import os
import RPi.GPIO as GPIO

GPIO.setmode (GPIO.BCM) #BCM uses the GPIO numbers while BOARD uses the actual pin number
GPIO.setwarnings (False)

button1 = 17
button2 = 18
button3 = 27

GPIO.setup(button1, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(button2, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(button3, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)

print("*~*~* Starting button tests *~*~*")
print("")

print("Waiting for button 1 press...")
while GPIO.input(button1) == False:
    time.sleep(0.1)

print("Button 1 pressed!")

print("")
print("Waiting for button 2 press...")
while GPIO.input(button2) == False:
    time.sleep(0.1)

print("Button 2 pressed!")

print("")
print("Waiting for button 3 press...")
while GPIO.input(button3) == False:
    time.sleep(0.1)

print("Button 3 pressed!")

print("")
print("Finished testing buttons!")
print("")

GPIO.cleanup()