用python写一个简单的音乐播放器

import pygame
import tkinter as tkr
from tkinter.filedialog import askdirectory
import os

music_player = tkr.Tk()
music_player.title("小墨音乐播放器")
music_player.geometry("150x450")
directory = askdirectory()
os.chdir(directory)
song_list = os.listdir()

play_list = tkr.Listbox(music_player,bg='white', selectmode=tkr.SINGLE)
for item in song_list:

pos = 0
play_list.insert(pos, item)
pos += 1

pygame.init()
pygame.mixer.init()

def play(): # 播放

pygame.mixer.music.load(play_list.get(tkr.ACTIVE))
var.set(play_list.get(tkr.ACTIVE))
pygame.mixer.music.play()

def stop(): #停止

pygame.mixer.music.stop()

def pause(): #暂停

pygame.mixer.music.pause()

def unpause(): #开始

pygame.mixer.music.unpause()

Button1 = tkr.Button(music_player, width=3, height=1, text="播放", command=play, bg="orange",

                 fg="white")

Button2 = tkr.Button(music_player, width=3, height=1, text="停止", command=stop, bg="orange",

                 fg="white")

Button3 = tkr.Button(music_player, width=3, height=1, text="暂停", command=pause, bg="orange",

                 fg="white")

Button4 = tkr.Button(music_player, width=3, height=1, text="开始", command=unpause,

                 bg="orange", fg="white")

var = tkr.StringVar()
song_title = tkr.Label(music_player,width=150, height=3, bg='white', textvariable=var)

song_title.pack()
Button1.pack(fill="x")
Button2.pack(fill="x")
Button3.pack(fill="x")
Button4.pack(fill="x")
play_list.pack(fill="both", expand="yes")
music_player.mainloop()