# Mission 4 Lesson 2
# Objectives 4-7
# With all three extenions
from botcore import *
from time import sleep
from random import randrange

n_guests = 0
tone = 440

stop_num = randrange(5, 9)
while True:

    if buttons.was_pressed(0):
        spkr.pitch(tone)
        sleep(0.1)
        spkr.off()
        buttons.was_pressed(0)
        leds.user_num(n_guests, True)
        n_guests = n_guests + 1
        tone = tone + 50
        if n_guests == stop_num:
            break