在Python中退出主循环

Question

尽管我是其他语言的一种实验程序员，但我在Python中很新。我一直试图做一个非常简单的事情，就是在开始后退出主循环。这似乎是一个大问题。下面的程序只会产生一系列事件。一切似乎都在工作，但我无法关闭最后的窗口......我该怎么办？

from Tkinter import * 

root=Tk() 
theMainFrame=Frame(root) 
theMainFrame.pack() 



class CloseAfterFinishFrame1(Frame): # Diz que herda os parametros de Frame 
    def __init__(self): 
     Frame.__init__(self,theMainFrame) # Inicializa com os parametros acima!! 
     Label(self,text="Hi",font=("Arial", 16)).pack() 
     button = Button (self, text = "I am ready", command=self.CloseWindow,font=("Arial", 12)) 
     button.pack()    
     self.pack() 

    def CloseWindow(self): 
     self.forget() 
     CloseAfterFinishFrame2() 



class CloseAfterFinishFrame2(Frame): # Diz que herda os parametros de Frame 
    def __init__(self): 
     Frame.__init__(self,theMainFrame) # Inicializa com os parametros acima!! 
     Label(self,text="Hey",font=("Arial", 16)).pack() 
     button = Button (self, text = "the End", command=self.CloseWindow,font=("Arial", 12)) 
     button.pack() 
     self.pack()   
    def CloseWindow(self): 
     self.forget() 
     CloseEnd() 


class CloseEnd(): 
    theMainFrame.quit() 



CloseAfterFinishFrame1() 

theMainFrame.mainloop() 

Answer 1

呼叫root.quit()，不theMainFrame.quit：

import Tkinter as tk 

class CloseAfterFinishFrame1(tk.Frame): # Diz que herda os parametros de Frame 
    def __init__(self, master): 
     self.master = master 
     tk.Frame.__init__(self, master) # Inicializa com os parametros acima!! 
     tk.Label(self, text="Hi", font=("Arial", 16)).pack() 
     self.button = tk.Button(self, text="I am ready", 
          command=self.CloseWindow, font=("Arial", 12)) 
     self.button.pack() 
     self.pack() 

    def CloseWindow(self): 
     # disable the button so pressing <SPACE> does not call CloseWindow again 
     self.button.config(state=tk.DISABLED) 
     self.forget() 
     CloseAfterFinishFrame2(self.master) 

class CloseAfterFinishFrame2(tk.Frame): # Diz que herda os parametros de Frame 
    def __init__(self, master): 
     tk.Frame.__init__(self, master) # Inicializa com os parametros acima!! 
     tk.Label(self, text="Hey", font=("Arial", 16)).pack() 
     button = tk.Button(self, text="the End", 
          command=self.CloseWindow, font=("Arial", 12)) 
     button.pack() 
     self.pack() 

    def CloseWindow(self): 
     root.quit() 

root = tk.Tk() 
CloseAfterFinishFrame1(root) 
root.mainloop() 

而且，没有必要使一个类CloseEnd如果你想要做的就是调用该函数root.quit。