直到整個過程完成後，Python GUI纔會更新

我有一個從目錄獲取文件並將其放入列表的進程。然後它在循環中迭代該列表。循環的最後一行是它應該更新我的GUI顯示的地方，然後再次使用列表中的下一項開始循環。直到整個過程完成後，Python GUI纔會更新

我的問題是，它並沒有實際更新gui，直到整個過程完成，這取決於列表的大小可能是30秒到一分鐘。這給了程序被「掛起」的感覺

我想要做的是處理列表中的一行，更新gui然後繼續。我哪裏做錯了？更新列表的行是＃使用驅動器內容填充列表視圖。打印語句僅用於調試。

def populateList(self): 
    print "populateList" 

    sSource = self.txSource.Value 
    sDest = self.txDest.Value 

    # re-intialize listview and validated list 
    self.listView1.DeleteAllItems() 
    self.validatedMove = None 
    self.validatedMove = [] 

    #Create list of files 
    listOfFiles = getList(sSource)  

    #prompt if no files detected 
    if listOfFiles == []: 
     self.lvActions.Append([datetime.datetime.now(),"Parse Source for .MP3 files","No .MP3 files in source directory"]) 

    #Populate list after both Source and Dest are chosen 
    if len(sDest) > 1 and len(sDest) > 1:  
     print "-iterate listOfFiles" 

     for file in listOfFiles: 
      sFilename = os.path.basename(file) 
      sTitle = getTitle(file) 
      sArtist = getArtist(file) 
      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 
      sDestDir = self.defineDestFilename(os.path.join(sDestDir,sFilename)) 

      # Populate listview with drive contents  
      self.listView1.Append([sFilename,sTitle,sArtist,sAlbum,sDestDir]) 

      #populate list to later use in move command 
      self.validatedMove.append([file,sDestDir]) 
      print "-item added to SourceDest list" 
    else: 
     print "-list not iterated"

來源

2011-02-08 ccwhite1