import RPi.GPIO as GPIO

def isPressed(btn, led):
    if (GPIO.input(btn) == False):
        GPIO.output(led, GPIO.HIGH)
    else:
        GPIO.output(led, GPIO.LOW)

button1 = 3
button2 = 4
led1 = 14
led2 = 15

GPIO.setmode(GPIO.BCM)
GPIO.setup(button1, GPIO.IN)
GPIO.setup(button2, GPIO.IN)
GPIO.setup(led1, GPIO.OUT)
GPIO.setup(led2, GPIO.OUT)

while (True):
    isPressed(button1, led1)
    isPressed(button2, led2)