Python Tkinter类继承问题

Question

我想操纵Tkinter中的列表框，但我遇到了一些麻烦。我曾经在一个课堂上拥有所有的东西，在一个页面上，它运行良好。我将这些方法分成两个不同页面上的不同类（一个用于显示内容，一个用于修改它们），现在我遇到了一些问题。

我收到以下错误AttributeError：操作没有属性'listbox'。我假设它是继承相关的东西，因为它在我将它分成两个文件之前工作正常。

这里的第一个文件

from Tkinter import * 
import Tkinter 
import SortActions 

class MakeList(Tkinter.Listbox): 

    def BuildMainWindow(self): 
     menubar = Frame(relief=RAISED,borderwidth=1) 
     menubar.pack() 

     mb_file = Menubutton(menubar,text='file') 
     mb_file.menu = Menu(mb_file) 
     mb_file.menu.add_command(label='open', command = self.BuildListbox) 
     mb_file.pack(side=LEFT) 

     mb_edit = Menubutton(menubar,text='edit') 
     mb_edit.menu = Menu(mb_edit) 
     mb_edit.pack(padx=25,side=RIGHT) 

     mb_file['menu'] = mb_file.menu 
     mb_edit['menu'] = mb_edit.menu 
     return 

    def BuildListbox(self): 
     self.listbox = Tkinter.Listbox() 
     index = SortActions.Actions() 
     self.listbox.bind('<<ListboxSelect>>', index.GetWindowIndex) 
     MoveItem = SortActions.Actions() 
     self.listbox.bind('<B1-Motion>', index.MoveWindowItem) 
     for item in ["one", "two", "three", "four"]: 
      self.listbox.insert(END, item)  
     self.listbox.insert(END, "a list entry") 
     self.listbox.pack() 
     #print self.listbox.get(0, END) 
     return 

if __name__ == '__main__': 
    start = MakeList() 
    start.BuildMainWindow() 
    mainloop() 

第二个文件，即我在与

from FileSort import MakeList 


class Actions(MakeList): 

    #gets the current item that was clicked in the window 
    def GetWindowIndex(self, event): 
     w = event.widget 
     self.curIndex = int(w.curselection()[0]) 

    #moves the current item in the window when clicked/dragged 
    def MoveWindowItem(self, event): 
     i = self.listbox.nearest(event.y) #here is where the error is occurring 
     print i 

我以为，因为我继承MakeList类我应该有准入问题之一。我也尝试改变它，所以我直接访问MakeList（一个对象），而不是错误说“Actions instance has no ....”它说“MakeList没有属性...”

我之前发布了一些内容我意外地运行了旧版本的代码，所以我引用了错误的错误。对不起，如果你看到那篇文章。现在走了

Answer 1

在我看来，没有理由的行动是在一个类...

#SortActions.py 

#gets the current item that was clicked in the window 
def GetWindowIndex(self, event): 
    w = event.widget 
    self.curIndex = int(w.curselection()[0]) 

#moves the current item in the window when clicked/dragged 
def MoveWindowItem(self, event): 
    i = self.nearest(event.y) #here is where the error is occurring 
    print i 

现在你可以使用动作：

... 
    def BuildListbox(self): 
     #self.listbox = Tkinter.Listbox() #??? This has no master widget ... 
     #Since this is already a listbox, there's no point in building another ... 

     self.bind('<<ListboxSelect>>', lambda e:SortActions.GetWindowIndex(self,e)) 

     self.bind('<B1-Motion>', lambda e:SortActions.MoveWindowItem(self,e) 
     for item in ("one", "two", "three", "four"): 
      self.insert(END, item)  
     self.insert(END, "a list entry") 
     self.pack()