python抱错pygame.error: mixer not initialized！急急急

Question

1.python抱错

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python34\requests-master\lib\tkinter\__init__.py", line 1538, in __call__
    return self.func(*args)
  File "C:\Python34\requests-master\mp3 play.py", line 198, in control_voice
    pygame.mixer.music.set_volume(float(value))
pygame.error: mixer not initialized

我的代码

import os
import tkinter
import tkinter.filedialog
import time
import threading
import pygame #实现音频播放
 
#第一步：搭建界面
 
root = tkinter.Tk()
root.title('音乐播放器v1.0')
#设置窗口大小和屏幕绝对位置
root.geometry('460x600+500+100')
#固定窗口大小，设置窗口不可拉伸
root.resizable(False,False)
 
folder = ''	# 接收文件路径 默认为空
res=[]		# 
num=0
now_music = ''
 
 
#第二步：实现功能
 
def buttonChooseClick():
	#添加文件函数
 
	global folder
	global res
	#如果folder不为空，则····
	if not folder:
		folder = tkinter.filedialog.askdirectory() #选择目录，返回目录名
		musics = [folder + '\\' + music
				for music in os.listdir(folder)\
						\
				if music.endswith(('.mp3','.m4a','.wav','.ogg'))	]
 
 
		ret = []
		for i in musics:
			ret.append(i.split('\\')[1:])
			res.append(i.replace("\\",'/'))
 
		var2 = tkinter.StringVar()
		var2.set(ret)
		lb = tkinter.Listbox(root,listvariable=var2)
		lb.place(x=50,y=220,width=260,height=300)
 
	if not folder:
		return
	global playing
	playing = True
 
 
	#根据情况禁用或启用相应按钮
 
	bottonPlay['state'] = 'normal'
	bottonStop['state'] = 'normal'
 
	#buttonPause['state'] = 'normal'
 
	pause_resume.set('播放')
 
 
#播放音乐函数
def play():
	
	#初始化混响设备
 
	if len(res):
		pygame.mixer.init()
		global num
		while playing:
			if not pygame.mixer.music.get_busy():
				#随机播放
				nextMusci = res[num]
				print(nextMusci)
				print(num)
				pygame.mixer.music.load(nextMusci.encode())
				#播放一次
				pygame.mixer.music.play(1)
				#print(len(res)-1)
				if len(res) - 1 ==num:
					num=0
				else:
					num +=1
				nextMusci = nextMusci.split("\\")[1:]
				musicName.set('playing....'+''.join(nextMusci))
			else:
				time.sleep(0.1)
 
 
#点击播放函数
def bottonPlayClik():
	bottonNext['state']='normal'
	bottonPrev['state']='normal'
 
	#选择要播放的音乐文件夹
	if pause_resume.get() == '播放':
		pause_resume.set('暂停')
		global folder
 
		if not folder:
			#选择目录，返回目录名
			folder = tkinter.filedialog.askdirectory()
 
		if not folder:
			return
 
		global playing
 
		playing = True
 
		#创建一个进程来播放音乐，当前主进程用来接收用户操作
 
		t = threading.Thread(target=play)
 
		t.start()
 
	elif pause_resume.get() == '暂停':
 
		pygame.mixer.music.pause()
		pause_resume.set('继续')
 
	elif pause_resume.get()=='继续':
		pygame.mixer.music.unpause()
 
		pause_resume.set('暂停')
 
 
#停止播放函数
def bottonStopClik():
	global playing
 
	playing = False
 
	pygame.mixer.music.stop()
 
#下一首函数
def bottonNextClik():
	global playing
 
	playing = False
 
	pygame.mixer.music.stop()
 
	global num 
 
	if len(res) == num:
		num=0
	playing = True
	global t
	t = threading.Thread(target=play)
 
	t.start()
 
#上一首函数
def bottonPrevClik():
	global playing
 
	playing=False
 
	pygame.mixer.music.stop()
 
	global num
 
	if num==0:
		num=len(res)-2
 
	elif num ==len(res)-1:
		num-=2
	else:
		num-=2
	print(num)
 
	playing = True
	global t
	t.threading.Thread(target=play)
 
	t.start()
#关闭窗口函数
def closeWindows():
	global playing
	playing=False
	time.sleep(0.3)
 
	try:
		pygame.mixer.music.stop()
		pygame.mixer.quit()
 
	except:
		pass
	root.destroy()
 
 
#声音控制函数
def control_voice(value=0.5):
	pygame.mixer.music.set_volume(float(value))
 
 
 
 
#添加按钮
bottonChoose=tkinter.Button(root,text='添加',command=buttonChooseClick)
#按钮布局
bottonChoose.place(x=50,y=50,width=50,height=20)
 
#播放按钮	跟踪变量值的变化
pause_resume=tkinter.StringVar(root,value='播放')
bottonPlay=tkinter.Button(root,textvariable=pause_resume,command=bottonPlayClik)
#按钮布局
bottonPlay.place(x=120,y=50,width=50,height=20)
bottonPlay['state'] = 'disabled'	#未添加文件（刚启动）时禁用
 
#停止播放
bottonStop = tkinter.Button(root,text='停止')
#按钮布局
bottonStop.place(x=50,y=130,width=50,height=20)
 
#下一首
bottonNext = tkinter.Button(root,text='下一首',command=bottonNextClik)
#按钮布局
bottonNext.place(x=50,y=100,width=50,height=20)
bottonNext['state']='disabled'
 
#上一首
bottonPrev = tkinter.Button(root,text='上一首',command=bottonPrevClik)
#按钮布局
bottonPrev.place(x=120,y=100,width=50,height=20)
bottonPrev['state']='disabled'
 
#显示内容--播放状态
musicName = tkinter.StringVar(root,value='暂时没有播放音乐...')
labelName = tkinter.Label(root,textvariable=musicName)
labelName.place(x=10,y=20,width=260,height=20)
 
#显示内容--音量调节
s = tkinter.Scale(root,label='音量',from_=0,to=1,orient=tkinter.HORIZONTAL,length=240,
		showvalue=0,tickinterval=2,resolution=0.1,command=control_voice)
s.place(x=50,y=150,width=200)
 
#关闭窗口
root.protocol("WM_DELETE_WINDOW",closeWindows)
 
 
 
 
 
#启用消息循环:显示出上一步创建的画板对象
root.mainloop()

有谁知道怎么办

Answer 1

pygame.mixer.init()

初始化一下，再运行，注意连接上音频设备