因此，我正在尝试制作一个简单的启动/停止音乐播放器。对于winsound.PlaySound命令，语法使我感到困惑。我检查了文档和论坛，但似乎找不到答案。这是我的代码，以及我要完成的工作。

import Tkinter, Tkconstants, tkFileDialog
import winsound

class MusicPlayer(Tkinter.Frame):

  def __init__(self, root):

    Tkinter.Frame.__init__(self, root)

    # options for buttons
    button_opt = {'fill': Tkconstants.BOTH, 'padx': 5, 'pady': 5}

    # define buttons
    Tkinter.Button(self, text='Play', command=self.play).pack(**button_opt)
    Tkinter.Button(self, text='Stop', command=self.stop).pack(**button_opt)    
    # define options for opening or saving a file
    self.file_opt = options = {}
    options['defaultextension'] = '*.wav'
    options['filetypes'] = [('WAV Sound Files', '*.wav')]
    options['initialdir'] = 'C:\\'
    options['initialfile'] = '.wav'
    options['parent'] = root
    options['title'] = 'Pick a File'

    # This is only available on the Macintosh, and only when Navigation Services are installed.
    #options['message'] = 'message'

    # if you use the multiple file version of the module functions this option is set automatically.
    #options['multiple'] = 1

    # defining options for opening a directory
    self.dir_opt = options = {}
    options['initialdir'] = 'C:\\'
    options['mustexist'] = False
    options['parent'] = root
    options['title'] = 'Pick a Dir'

  def askopenfile(self):

    return tkFileDialog.askopenfile(mode='r', **self.file_opt)

  def askopenfilename(self):

    # get filename
    filename = tkFileDialog.askopenfilename(**self.file_opt)

    # open file on your own
    if filename:
      return open(filename, 'r')
      print filename

  def asksaveasfile(self):

    return tkFileDialog.asksaveasfile(mode='w', **self.file_opt)

  def asksaveasfilename(self):

    # get filename
    filename = tkFileDialog.asksaveasfilename(**self.file_opt)

    # open file on your own
    if filename:
      return open(filename, 'w')

  def askdirectory(self):


    return tkFileDialog.askdirectory(**self.dir_opt)

  def play(self):
    soundfile = self.askopenfilename
    winsound.PlaySound(soundfile, soundfile)

  def stop(self):
    winsound.PlaySound(None, SND_PURGE)

if __name__=='__main__':
  root = Tkinter.Tk()
  MusicPlayer(root).pack()
  root.wm_title('Music Player')
  root.mainloop()

我正在尝试做的

我似乎无法找出正确的语法，flag对winsound.PlaySound。我尝试了winsound.PlaySound(filename, SND_FILENAME)，对于停止按钮我尝试了winsound.PlaySound(None, SND_PURGE)。

我得到的错误

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1532, in __call__
    return self.func(*args)
  File "C:\Users\Brenneman.Josh.19\Downloads\Code\MusicPlayer.py", line 72, in play
    winsound.PlaySound(soundfile, SND_FILENAME)
NameError: global name 'SND_FILENAME' is not defined
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1532, in __call__
    return self.func(*args)
  File "C:\Users\Brenneman.Josh.19\Downloads\Code\MusicPlayer.py", line 75, in stop
    winsound.PlaySound(None, SND_PURGE)
NameError: global name 'SND_PURGE' is not defined

怎么了？