课程难度

课程任务

制作一个音乐盒，共有4首曲子，编号分别为1、2、3、4，按下A按钮，屏幕上显示曲子编号，按下B按钮，开始播放。

代码

# Imports go at the top
from microbit import *
import music
bianhao = 0

while True:
    if button_a.was_pressed():
        bianhao += 1
        if bianhao == 5:
            bianhao = 1
        display.show(bianhao)
    if button_b.was_pressed():
        if bianhao == 1:
            music.play(music.ODE)
        elif bianhao == 2:
            music.play(music.BIRTHDAY)
        elif bianhao == 3:
            music.play(music.ENTERTAINER)
        elif bianhao == 4:
            music.play(music.NYAN)