我是python的新手,我正在尝试构建一个可以将所有mp3歌曲添加到该文件夹列表中的音乐播放器。
我可以看到列表中的所有歌曲,但是当我点击下一个按钮时,它只会播放下一首歌曲和之前的一首歌曲。如果我再次点击它再次播放同一首歌。无论如何我可以修复我的代码
我认为方法中存在一些问题,nextsong,prevsong。请帮助我尝试了很多,但无法找到错误的位置
import os
import pygame
from tkinter.filedialog import Tk, Button, askdirectory, Label, Listbox, LEFT, RIGHT
from mutagen.id3 import ID3
root = Tk()
listofsongs=[]
formattedlist = []
realnames = []
index =0
def directorychoose():
filename = askdirectory()
os.chdir(filename)
for file in os.listdir(filename):
if file.endswith(".mp3"):
realdir = os.path.realpath(file)
audio = ID3(realdir)
realnames.append(audio['TIT2'].text[0])
listofsongs.append(file)
for file in realnames:
formattedlist.append(file+"\n")
pygame.mixer.init()
pygame.mixer.music.load(listofsongs[0])
pygame.mixer.music.play()
def nextsong(event):
pygame.mixer.music.load(listofsongs[index+1])
pygame.mixer.music.play()
def prevsong(event):
pygame.mixer.music.load(listofsongs[index-1])
pygame.mixer.music.play()
def stopsong(event):
pygame.mixer.music.stop()
directorychoose()
label = Label(root,text='Music player')
label.pack()
listbox = Listbox(root)
listbox.pack()
for item in formattedlist:
listbox.insert(0,item)
button = Button(root,text='Next')
button.pack(side=LEFT)
button2 = Button(root,text='Prev')
button2.pack(side=RIGHT)
stopbutton = Button(root,text='Stop')
stopbutton.pack()
button.bind("<Button-1>",nextsong)
button2.bind("<Button-1>",prevsong)
stopbutton.bind("<Button-1>",stopsong)
root.mainloop()
答案 0 :(得分:1)
问题在于您从未将更改分配给索引,因此它永远不会更改。此外,必须将其作为全局变量放置,因为函数中的变量是在其中创建和销毁的。
你这样做:
x+1
你应该把它改成:
x= x+1
完整代码:
import os
import pygame
from tkinter.filedialog import Tk, Button, askdirectory, Label, Listbox, LEFT, RIGHT
from mutagen.id3 import ID3
root = Tk()
listofsongs = []
formattedlist = []
realnames = []
index = 0
def directorychoose():
filename = askdirectory()
os.chdir(filename)
for file in os.listdir(filename):
if file.endswith(".mp3"):
realdir = os.path.realpath(file)
audio = ID3(realdir)
realnames.append(audio['TIT2'].text[0])
listofsongs.append(file)
for file in realnames:
formattedlist.append(file + "\n")
pygame.mixer.init()
pygame.mixer.music.load(listofsongs[0])
pygame.mixer.music.play()
def nextsong(event):
global index
index += 1
pygame.mixer.music.load(listofsongs[index])
pygame.mixer.music.play()
def prevsong(event):
global index
index -= 1
pygame.mixer.music.load(listofsongs[index])
pygame.mixer.music.play()
def stopsong(event):
pygame.mixer.music.stop()
directorychoose()
label = Label(root, text='Music player')
label.pack()
listbox = Listbox(root)
listbox.pack()
for item in formattedlist:
listbox.insert(0, item)
button = Button(root, text='Next')
button.pack(side=LEFT)
button2 = Button(root, text='Prev')
button2.pack(side=RIGHT)
stopbutton = Button(root, text='Stop')
stopbutton.pack()
button.bind("<Button-1>", nextsong)
button2.bind("<Button-1>", prevsong)
stopbutton.bind("<Button-1>", stopsong)
root.mainloop()