我有一个由
定义的对象列表class Track(object):
def __init__(self, title, artist, album, source, dest):
self.title = title
self.artist = artist
self.album = album
self.source = source
self.dest = dest
在gui上，我有一个与事件挂钩的按钮。输出应该将列表的内容打印到命令行（而不是gui）
def onPrintBtn(self, event):
print "onPrintBtn"
for track in self.TrackOlv:
print(track)
出于某种原因，这以无限循环结束 （班级'主要 .Track'）
我知道我的问题是属性是对象的一部分，但我不知道该怎么做才能将它们转换为字符串值，以便我可以根据需要将它们打印出来。
这里的每个请求是我的程序的完整代码。
#Boa:Frame:Frame1
import wx
import os
import glob
import shutil
import datetime
from mutagen.mp3 import MP3
from mutagen.easyid3 import EasyID3
import mutagen.id3
import unicodedata
from ObjectListView import ObjectListView, ColumnDefn
########################################################################
class Track(object):
def __init__(self, title, artist, album, source, dest):
self.title = title
self.artist = artist
self.album = album
self.source = source
self.dest = dest
def __str__(self):
return "'%s' by %s on teh ablum '%s'\nSource: %s\nDest: %s" % \
(self.title, self.artist, self.album, self.source, self.dest)
def __unicode__(self):
return unicode(str(self))
class Action(object):
def __init__(self, timestamp, action, result):
self.timestamp = timestamp
self.action = action
self.result = result
########################################################################
# Non GUI
########################################################################
def selectFolder(sMessage):
print "Select Folder"
dlg = wx.DirDialog(None, message = sMessage)
if dlg.ShowModal() == wx.ID_OK:
# User has selected something, get the path, set the window's title to the path
filename = dlg.GetPath()
else:
filename = "None Selected"
dlg.Destroy()
return filename
def getList(SourceDir):
print "getList"
listOfFiles = None
print "-list set to none"
listOfFiles = glob.glob(SourceDir + '/*.mp3')
return listOfFiles
def getListRecursive(SourceDir):
print "getListRecursive"
listOfFiles = None
listOfFiles = []
print "-list set to none"
for root, dirs, files in os.walk(SourceDir):
for file in files:
if file.endswith(".mp3"):
listOfFiles.append(os.path.join(root,file))
#print listOfFiles
return listOfFiles
def strip_accents(s):
print "strip_accents"
return ''.join((c for c in unicodedata.normalize('NFD', s) if unicodedata.category(c) != 'Mn'))
def replace_all(text):
print "replace_all " + text
dictionary = {'\\':"", '?':"", '/':"", '...':"", ':':"", '&':"and"}
print text
print text.decode('utf-8')
text = strip_accents(text.decode('utf-8'))
for i, j in dictionary.iteritems():
text = text.replace(i,j)
return text
def getTitle(fileName):
print "getTitle"
audio = MP3(fileName)
try:
sTitle = str(audio["TIT2"])
except KeyError:
sTitle = os.path.basename(fileName)
frame.lvActions.Append([datetime.datetime.now(),fileName,"Title tag does not exist, set to filename"])
# TODO: Offer to set title to filename
## If fileName != filename then
## prompt user for action
## Offer Y/n/a
sTitle = replace_all(sTitle)
return sTitle
def getArtist(fileName):
print "get artist"
audio = MP3(fileName)
try:
sArtist = str(audio["TPE1"])
except KeyError:
sArtist = "unkown"
frame.lvActions.Append([datetime.datetime.now(),fileName,"Artist tag does not exist, set to unkown"])
#Replace all special chars that cause dir path errors
sArtist = replace_all(sArtist)
#if name = 'The Beatles' change to 'Beatles, The'
if sArtist.lower().find('the') == 0:
sArtist = sArtist.replace('the ',"")
sArtist = sArtist.replace('The ',"")
sArtist = sArtist + ", The"
return sArtist
def getAblum(fileName):
print "get album"
audio = MP3(fileName)
try:
sAlbum = str(audio["TALB"])
except KeyError:
sAlbum = "unkown"
frame.lvActions.Append([datetime.datetime.now(),fileName,"Album tag does not exist, set to unkown"])
#Replace all special chars that cause dir path error
sAlbum = replace_all(sAlbum)
return sAlbum
########################################################################
# GUI
########################################################################
class MainPanel(wx.Panel):
#----------------------------------------------------------------------
def __init__(self, parent):
wx.Panel.__init__(self, parent=parent, id=wx.ID_ANY)
self.TrackOlv = ObjectListView(self, wx.ID_ANY,
style=wx.LC_REPORT|wx.SUNKEN_BORDER)
self.setTracks()
# Allow the cell values to be edited when double-clicked
self.TrackOlv.cellEditMode = ObjectListView.CELLEDIT_SINGLECLICK
self.ActionsOlv = ObjectListView(self, wx.ID_ANY,
style=wx.LC_REPORT|wx.SUNKEN_BORDER)
self.setActions()
# create browse to source button
sourceBtn = wx.Button(self, wx.ID_ANY, "Browse Source")
sourceBtn.Bind(wx.EVT_BUTTON, self.onBrowseSource)
# create source txt box
self.txSource = wx.TextCtrl(self, wx.ID_ANY, name=u'txSource', value=u'')
# create browse dest button
destBtn = wx.Button(self, wx.ID_ANY, "Browse Destination")
destBtn.Bind(wx.EVT_BUTTON, self.onBrowseDest)
# create dest txt box
self.txDest = wx.TextCtrl(self, wx.ID_ANY, name=u'txDest', value=u'')
# create Move Files button
moveBtn = wx.Button(self, wx.ID_ANY, "Move Files")
moveBtn.Bind(wx.EVT_BUTTON, self.onMoveFiles)
# print list button - debug only
printBtn = wx.Button(self, wx.ID_ANY, "Print List")
printBtn.Bind(wx.EVT_BUTTON, self.onPrintBtn)
# create check box to include all sub files
self.cbSubfolders = wx.CheckBox(self, wx.ID_ANY,
label=u'Include Subfolders', name=u'cbSubfolders', style=0)
self.cbSubfolders.SetValue(True)
self.cbSubfolders.Bind(wx.EVT_CHECKBOX, self.OnCbSubfoldersCheckbox)
# create check box to repace file names
self.cbReplaceFilename = wx.CheckBox(self, wx.ID_ANY,
label=u'Replace Filename with Title Tag',
name=u'cbReplaceFilename', style=0)
self.cbReplaceFilename.SetValue(False)
self.cbReplaceFilename.Bind(wx.EVT_CHECKBOX, self.OnCbReplaceFilenameCheckbox)
# Create some sizers
mainSizer = wx.BoxSizer(wx.VERTICAL)
feedbackSizer = wx.BoxSizer(wx.VERTICAL)
sourceSizer = wx.BoxSizer(wx.HORIZONTAL)
btnSizer = wx.BoxSizer(wx.HORIZONTAL)
feedbackSizer.Add(self.TrackOlv, 1, wx.ALL|wx.EXPAND, 2)
feedbackSizer.Add(self.ActionsOlv, 1, wx.ALL|wx.EXPAND, 2)
sourceSizer.Add(sourceBtn, 0, wx.ALL, 2)
sourceSizer.Add(self.txSource, 1, wx.ALL|wx.EXPAND, 2)
sourceSizer.Add(destBtn, 0, wx.ALL, 2)
sourceSizer.Add(self.txDest, 1, wx.ALL|wx.EXPAND, 2)
btnSizer.Add(printBtn)
btnSizer.Add(moveBtn, 0, wx.ALL, 2)
btnSizer.Add(self.cbSubfolders, 0, wx.ALL, 2)
btnSizer.Add(self.cbReplaceFilename, 0, wx.ALL, 2)
mainSizer.Add(feedbackSizer, 1 , wx.ALL|wx.EXPAND, 2)
mainSizer.Add(sourceSizer, 0, wx.ALL|wx.EXPAND, 2)
#mainSizer.Add(destSizer, 0, wx.ALL|wx.EXPAND, 2)
#mainSizer.Add(destSizer, 0, wx.All|wx.Expand, 2)
mainSizer.Add(btnSizer, 0, wx.ALL, 2)
self.SetSizer(mainSizer)
mainSizer.Fit(self)
#----------------------------------------------------------------------
# Set the GUI column headers and width
#----------------------------------------------------------------------
def setTracks(self, data=None):
self.TrackOlv.SetColumns([
ColumnDefn("Title", "left", 100, "title"),
ColumnDefn("Artist", "left", 100, "artist"),
ColumnDefn("Album", "left", 100, "album"),
ColumnDefn("Source", "left", 300, "source"),
ColumnDefn("Destination", "left", 300, "dest"),
])
def setActions(self, data=None):
self.ActionsOlv.SetColumns([
ColumnDefn("Time", "left", 100, "timestamp"),
ColumnDefn("Action", "left", 450, "action"),
ColumnDefn("Result", "left", 450, "result")
])
#----------------------------------------------------------------------
# GUI EVENTS
#-----------------------------------------------------------------------
EventList = [Action]
#Select Source of files
def onBrowseSource(self, event):
print "OnBrowseSource"
source = selectFolder("Select the Source Directory")
print source
self.txSource.SetValue(source)
self.anEvent = [Action(datetime.datetime.now(),source,"Set as Source dir")]
self.ActionsOlv.AddObjects(self.anEvent)
self.populateList()
#Select Source of files
def onBrowseDest(self, event):
print "OnBrowseDest"
dest = selectFolder("Select the Destination Directory")
print dest
self.txDest.SetValue(dest)
self.anEvent = [Action(datetime.datetime.now(),dest,"Set as Destination dir")]
self.ActionsOlv.AddObjects(self.anEvent)
self.populateList()
def OnCbSubfoldersCheckbox(self, event):
print "cbSubfolder"
self.populateList()
def OnCbReplaceFilenameCheckbox(self, event):
print "cbReplaceFilename"
self.populateList()
def onMoveFiles(self, event):
print "onMoveFiles"
self.moveFiles()
def onPrintBtn(self, event):
print "onPrintBtn"
for track in self.TrackOlv:
print (track)
#-------------
#Computations
#-------------
def defineDestFilename(self, sFullDestPath):
print "define dest"
iCopyX = 0
bExists = False
sOrigName = sFullDestPath
#If the file does not exist return original path/filename
if os.path.isfile(sFullDestPath) == False:
print "-" + sFullDestPath + " is valid"
return sFullDestPath
#Add .copyX.mp3 to the end of the file and retest until a new filename is found
while bExists == False:
sFullDestPath = sOrigName
iCopyX += 1
sFullDestPath = sFullDestPath + ".copy" + str(iCopyX) + ".mp3"
if os.path.isfile(sFullDestPath) == False:
print "-" + sFullDestPath + " is valid"
self.lvActions.Append([datetime.datetime.now(),"Desitnation filename changed since file exists",sFullDestPath])
bExists = True
#return path/filename.copyX.mp3
return sFullDestPath
def populateList(self):
print "populateList"
sSource = self.txSource.Value
sDest = self.txDest.Value
#Initalize list to reset all values on any option change
self.initialList = [Track]
self.TrackOlv.SetObjects(self.initialList)
#Create list of files
if self.cbSubfolders.Value == True:
listOfFiles = getListRecursive(sSource)
else:
listOfFiles = getList(sSource)
print listOfFiles
#prompt if no files detected
if listOfFiles == []:
self.anEvent = [Action(datetime.datetime.now(),"Parse Source for .MP3 files","No .MP3 files in source directory")]
self.ActionsOlv.AddObjects(self.anEvent)
#Populate list after both Source and Dest are chosen
if len(sDest) > 1 and len(sDest) > 1:
print "-iterate listOfFiles"
for file in listOfFiles:
(sSource,sFilename) = os.path.split(file)
print sSource
print sFilename
#sFilename = os.path.basename(file)
sTitle = getTitle(file)
try:
sArtist = getArtist(file)
except UnicodeDecodeError:
print "unicode"
sArtist = "unkown"
sAlbum = getAblum(file)
# Make path = sDest + Artist + Album
sDestDir = os.path.join (sDest, sArtist)
sDestDir = os.path.join (sDestDir, sAlbum)
#If file exists change destination to *.copyX.mp3
if self.cbReplaceFilename.Value == True:
sDestDir = self.defineDestFilename(os.path.join(sDestDir,sTitle))
else:
sDestDir = self.defineDestFilename(os.path.join(sDestDir,sFilename))
# Populate listview with drive contents
#sSource = self.txSource.Value
sDest = self.txDest.Value
# TODO: Make source = exact source of track, not parent source
# TODO: Seperate dest and filename
self.aTrack = [Track(sTitle,sArtist,sAlbum,sSource, sDestDir)]
self.TrackOlv.AddObjects(self.aTrack)
self.Update()
#populate list to later use in move command
#self.validatedMove.append([file,sDestDir])
print "-item added to SourceDest list"
else:
print "-list not iterated"
def moveFiles (self):
print "move files"
#for track in self.TrackOlv:
# print "-iterate SourceDest"
# #create dir
# (sDest,filename) = os.path.split(self.TrackOlv)
# print "-check dest"
#
# if not os.path.exists(sDest):
# print "-Created dest"
# os.makedirs(sDest)
# self.lvActions.Append([datetime.datetime.now(),sDest,"Created"])
# self.Update()
# self.lvActions.EnsureVisible(self.lvActions.GetItemCount() -1)
#
# #Move File
# print "-move file"
# shutil.move(SourceDest[0],SourceDest[1])
# self.lvActions.Append([datetime.datetime.now(),filename,"Moved"])
# self.Update()
# self.lvActions.EnsureVisible(self.lvActions.GetItemCount() -1)
#
#self.lvActions.Append([datetime.datetime.now(),"Move Complete","Success"])
#self.Update()
#self.lvActions.EnsureVisible(self.lvActions.GetItemCount() -1)
########################################################################
class MainFrame(wx.Frame):
#----------------------------------------------------------------------
def __init__(self):
wx.Frame.__init__(self, parent=None, id=wx.ID_ANY,
title="MP3 Manager", size=(1024,768)) #W by H
panel = MainPanel(self)
########################################################################
class GenApp(wx.App):
#----------------------------------------------------------------------
def __init__(self, redirect=False, filename=None):
wx.App.__init__(self, redirect, filename)
#----------------------------------------------------------------------
def OnInit(self):
# create frame here
frame = MainFrame()
frame.Show()
return True
#----------------------------------------------------------------------
def main():
"""
Run the demo
"""
app = GenApp()
app.MainLoop()
if __name__ == "__main__":
main()
答案 0 :(得分：1)
您需要覆盖自定义类的__str__和/或__unicode__特殊方法。
class Track(object):
...
def __str__(self):
return "'%s' by %s on the album '%s'\nSource: %s\nDest: %s" % \
(self.title, self.artist, self.album, self.source, self.dest)
def __unicode__(self):
return unicode(str(self))
然后，只要您尝试打印或字符串格式化此对象的实例，就会调用相应的方法
答案 1 :(得分：-1)
也许
def onPrintBtn(self, event):
print "onPrintBtn"
for track in self.TrackOlv:
print(repr(track))
...