python通过wxPython打开一个音频文件并播放的方法

import wximport wx.lib.filebrowsebuttonclass MyFrame(wx.Frame):  def __init__(self, parent, mytitle, mysize):    wx.Frame.__init__(self, parent, wx.ID_ANY, mytitle,      size=mysize)    self.SetBackgroundColour("green")    panel = wx.Panel(self)    # mask file browser to look for .wav sound files    self.fbb = wx.lib.filebrowsebutton.FileBrowseButton(panel,      labelText="Select a WAVE file:", fileMask="*.wav")    self.play_button = wx.Button(panel, wx.ID_ANY, ">> Play")    self.play_button.Bind(wx.EVT_BUTTON, self.onPlay)    # setup the layout with sizers    hsizer = wx.BoxSizer(wx.HORIZONTAL)    hsizer.Add(self.fbb, 1, wx.ALIGN_CENTER_VERTICAL)    hsizer.Add(self.play_button, 0, wx.ALIGN_CENTER_VERTICAL)    # create a border space    border = wx.BoxSizer(wx.VERTICAL)    border.Add(hsizer, 0, wx.EXPAND|wx.ALL, 10)    panel.SetSizer(border)  def onPlay(self, evt):    filename = self.fbb.GetValue()    self.sound = wx.Sound(filename)    # error handling ...    if self.sound.IsOk():      self.sound.Play(wx.SOUND_ASYNC)    else:      wx.MessageBox("Missing or invalid sound file", "Error")app = wx.App(0)# create a MyFrame instance and show the framemytitle = "wx.lib.filebrowsebutton and wx.Sound"width = 600height = 90MyFrame(None, mytitle, (width, height)).Show()app.MainLoop()