# Mission 4 Lesson 2
# Objectives 4-7
from botcore import *
from time import sleep

n_guests = 0

while True:

    if buttons.was_pressed(0):
        spkr.pitch(440)
        sleep(0.1)
        spkr.off()
        buttons.was_pressed(0)
        leds.ls_num(n_guests, True)
        n_guests = n_guests + 1
        if n_guests == 5:
            break