wxpython SplitterWindow panel 刷新后不能正确显示的问题?

现在用wxpython 做联系人应用, 希望实现点击左侧联系人列表刷新右侧联系人信息 现在使用了wx.SplitterWindow, ReplaceWindow(winOld, winNew) 现在点击实现了替换,返回了True 。但是替换后不能在右侧显示。 SplitterWindow 部分代码:

class SplitterContacts(wx.SplitterWindow):                                      
    def __init__(self, parent, ID):                                             
        wx.SplitterWindow.__init__(self, parent, ID,                            
            style = wx.SP_LIVE_UPDATE)                                      
        self.sp = wx.SplitterWindow(self)                                       
        self.InitSplitter()                                                     

    def InitSplitter(self):                                                     
        self.SetSize((500, 500))                                                
        style = wx.BORDER_SUNKEN                                                
        with open('contacts.json', 'r') as contacts:                            
            contacts = contacts.read()                                          
        contacts = json.loads(contacts)                                         
        contact = contacts.values()[0]                                          

        left_list = wx.Panel(self, style=style)                                 
        left_list = ListContactsPanel(self, style=style, contacts=contacts)     
        left_list.SetBackgroundColour("sky blue")                               

        right_list = ContactDetail(self, style=style, contact=contact)          
        right_list.SetBackgroundColour("pink")                                  

        self.SetMinimumPaneSize(200)                                            
        self.SplitVertically(left_list, right_list, -400)

点击响应事件 处理

def OnColClick(self, evt):                                                  
    i = evt.GetIndex()                                                      
    contact = self.contacts.values()[i]                                     
    left = self.parent.GetWindow1()                                         
    old = self.parent.GetWindow2()                                          
    old.SetBackgroundColour("blue")                                         
    style = wx.BORDER_SUNKEN                                                
    new = ContactDetail(self, style=style, contact=contact)                                                                         
    self.parent.ReplaceWindow(old, new)  
    old.Destroy()                                 
    new.Show(True)  

不知道哪里出了错误! 请教一下 谢谢!

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