Python で書かれた単純な mp3 プレーヤーの例を探していて、これを見つけました: http://www.blog.pythonlibrary.org/2010/04/20/wxpython-creating-a-simple-mp3-player/
実行しようとしましたが、134 行目で失敗します ('Load' メソッドの呼び出し時)。
エラーのトレースバック:
Traceback (most recent call last):
File "player_skeleton2.py", line 161, in onBrowse
self.loadMusic(path)
File "player_skeleton2.py", line 135, in loadMusic
wx.MessageBox("Unable to load %s: Unsupported format?" % path,
NameError: global name 'path' is not defined
私が Mac OS を使用していることに何か関係があるのではないかと考えています
誰かがそれを手伝ってくれますか、それとも別の mp3 プレーヤーの例を教えてくれますか?
どうもありがとう！
プレイヤーコード:
#----------------------------------------------------------------------
# player_skeleton2.py
#
# Created: 04/15/2010
#
# Author: Mike Driscoll - mike@pythonlibrary.org
#----------------------------------------------------------------------
import os
import wx
import wx.media
import wx.lib.buttons as buttons
dirName = os.path.dirname(os.path.abspath(__file__))
bitmapDir = os.path.join(dirName, 'bitmaps')
########################################################################
class MediaPanel(wx.Panel):
""""""
#----------------------------------------------------------------------
def __init__(self, parent):
"""Constructor"""
wx.Panel.__init__(self, parent=parent)
self.frame = parent
self.currentVolume = 50
self.createMenu()
self.layoutControls()
sp = wx.StandardPaths.Get()
self.currentFolder = sp.GetDocumentsDir()
self.timer = wx.Timer(self)
self.Bind(wx.EVT_TIMER, self.onTimer)
self.timer.Start(100)
#----------------------------------------------------------------------
def layoutControls(self):
"""
Create and layout the widgets
"""
try:
self.mediaPlayer = wx.media.MediaCtrl(self, style=wx.SIMPLE_BORDER)
except NotImplementedError:
self.Destroy()
raise
# create playback slider
self.playbackSlider = wx.Slider(self, size=wx.DefaultSize)
self.Bind(wx.EVT_SLIDER, self.onSeek, self.playbackSlider)
self.volumeCtrl = wx.Slider(self, style=wx.SL_VERTICAL|wx.SL_INVERSE)
self.volumeCtrl.SetRange(0, 100)
self.volumeCtrl.SetValue(self.currentVolume)
self.volumeCtrl.Bind(wx.EVT_SLIDER, self.onSetVolume)
# Create sizers
mainSizer = wx.BoxSizer(wx.VERTICAL)
hSizer = wx.BoxSizer(wx.HORIZONTAL)
audioSizer = self.buildAudioBar()
# layout widgets
mainSizer.Add(self.playbackSlider, 1, wx.ALL|wx.EXPAND, 5)
hSizer.Add(audioSizer, 0, wx.ALL|wx.CENTER, 5)
hSizer.Add(self.volumeCtrl, 0, wx.ALL, 5)
mainSizer.Add(hSizer)
self.SetSizer(mainSizer)
self.Layout()
#----------------------------------------------------------------------
def buildAudioBar(self):
"""
Builds the audio bar controls
"""
audioBarSizer = wx.BoxSizer(wx.HORIZONTAL)
self.buildBtn({'bitmap':'player_prev.png', 'handler':self.onPrev,
'name':'prev'},
audioBarSizer)
# create play/pause toggle button
img = wx.Bitmap(os.path.join(bitmapDir, "player_play.png"))
self.playPauseBtn = buttons.GenBitmapToggleButton(self, bitmap=img, name="play")
self.playPauseBtn.Enable(False)
img = wx.Bitmap(os.path.join(bitmapDir, "player_pause.png"))
self.playPauseBtn.SetBitmapSelected(img)
self.playPauseBtn.SetInitialSize()
self.playPauseBtn.Bind(wx.EVT_BUTTON, self.onPlay)
audioBarSizer.Add(self.playPauseBtn, 0, wx.LEFT, 3)
btnData = [{'bitmap':'player_stop.png',
'handler':self.onStop, 'name':'stop'},
{'bitmap':'player_next.png',
'handler':self.onNext, 'name':'next'}]
for btn in btnData:
self.buildBtn(btn, audioBarSizer)
return audioBarSizer
#----------------------------------------------------------------------
def buildBtn(self, btnDict, sizer):
""""""
bmp = btnDict['bitmap']
handler = btnDict['handler']
img = wx.Bitmap(os.path.join(bitmapDir, bmp))
btn = buttons.GenBitmapButton(self, bitmap=img, name=btnDict['name'])
btn.SetInitialSize()
btn.Bind(wx.EVT_BUTTON, handler)
sizer.Add(btn, 0, wx.LEFT, 3)
#----------------------------------------------------------------------
def createMenu(self):
"""
Creates a menu
"""
menubar = wx.MenuBar()
fileMenu = wx.Menu()
open_file_menu_item = fileMenu.Append(wx.NewId(), "&Open", "Open a File")
menubar.Append(fileMenu, '&File')
self.frame.SetMenuBar(menubar)
self.frame.Bind(wx.EVT_MENU, self.onBrowse, open_file_menu_item)
#----------------------------------------------------------------------
def loadMusic(self, musicFile):
""""""
if not self.mediaPlayer.Load(musicFile):
wx.MessageBox("Unable to load %s: Unsupported format?" % path,
"ERROR",
wx.ICON_ERROR | wx.OK)
else:
self.mediaPlayer.SetInitialSize()
self.GetSizer().Layout()
self.playbackSlider.SetRange(0, self.mediaPlayer.Length())
self.playPauseBtn.Enable(True)
#----------------------------------------------------------------------
def onBrowse(self, event):
"""
Opens file dialog to browse for music
"""
wildcard = "MP3 (*.mp3)|*.mp3|" \
"WAV (*.wav)|*.wav"
dlg = wx.FileDialog(
self, message="Choose a file",
defaultDir=self.currentFolder,
defaultFile="",
wildcard=wildcard,
style=wx.OPEN | wx.CHANGE_DIR
)
if dlg.ShowModal() == wx.ID_OK:
path = dlg.GetPath()
self.currentFolder = os.path.dirname(path)
self.loadMusic(path)
dlg.Destroy()
#----------------------------------------------------------------------
def onNext(self, event):
"""
Not implemented!
"""
pass
#----------------------------------------------------------------------
def onPause(self):
"""
Pauses the music
"""
self.mediaPlayer.Pause()
#----------------------------------------------------------------------
def onPlay(self, event):
"""
Plays the music
"""
if not event.GetIsDown():
self.onPause()
return
if not self.mediaPlayer.Play():
wx.MessageBox("Unable to Play media : Unsupported format?",
"ERROR",
wx.ICON_ERROR | wx.OK)
else:
self.mediaPlayer.SetInitialSize()
self.GetSizer().Layout()
self.playbackSlider.SetRange(0, self.mediaPlayer.Length())
event.Skip()
#----------------------------------------------------------------------
def onPrev(self, event):
"""
Not implemented!
"""
pass
#----------------------------------------------------------------------
def onSeek(self, event):
"""
Seeks the media file according to the amount the slider has
been adjusted.
"""
offset = self.playbackSlider.GetValue()
self.mediaPlayer.Seek(offset)
#----------------------------------------------------------------------
def onSetVolume(self, event):
"""
Sets the volume of the music player
"""
self.currentVolume = self.volumeCtrl.GetValue()
print "setting volume to: %s" % int(self.currentVolume)
self.mediaPlayer.SetVolume(self.currentVolume)
#----------------------------------------------------------------------
def onStop(self, event):
"""
Stops the music and resets the play button
"""
self.mediaPlayer.Stop()
self.playPauseBtn.SetToggle(False)
#----------------------------------------------------------------------
def onTimer(self, event):
"""
Keeps the player slider updated
"""
offset = self.mediaPlayer.Tell()
self.playbackSlider.SetValue(offset)
########################################################################
class MediaFrame(wx.Frame):
#----------------------------------------------------------------------
def __init__(self):
wx.Frame.__init__(self, None, wx.ID_ANY, "Python Music Player")
panel = MediaPanel(self)
#----------------------------------------------------------------------
# Run the program
if __name__ == "__main__":
app = wx.App(False)
frame = MediaFrame()
frame.Show()
app.MainLoop()