Define __getattr__ for wrapped GUI class : Action « Tkinker « Python Tutorial

1. Python Tutorial
2. Tkinker
3. Action

from Tkinter import *

class HelloPackage:                         
    def __init__(self, parent=None):
        self.top = Frame(parent)            
        self.top.pack()
        self.data = 0
        self.make_widgets()                 
    def make_widgets(self):
        Button(self.top, text='Bye', command=self.top.quit).pack(side=LEFT)
        Button(self.top, text='Hye', command=self.message).pack(side=RIGHT)
    def message(self):
        self.data += 5
        print self.data
     
class HelloPackage(HelloPackage): 
    def __getattr__(self, name):
        return getattr(self.top, name)  
     
HelloPackage().top.mainloop()

18.1.Action
	18.1.1.	Wrap a command in a function
	18.1.2.	Use lambda as action command
	18.1.3.	Wrap action command in a class
	18.1.4.	Wrap GUI design in a class: a button on a frame
	18.1.5.	Wrap GUI design in a class: layout controls and link actions
	18.1.6.	Add widgets to wrapped GUI class
	18.1.7.	Define __getattr__ for wrapped GUI class
	18.1.8.	Default press action
	18.1.9.	bind actions: key pressed