Tkinter Global Binding

You would use the bind_all method on the root window. This will then apply to all widgets (unless you remove the bindtag "all" from some widgets). Note that these bindings fire last, so you can still override the application-wide binding on specific widgets if you wish.

Here's a contrived example:

import Tkinter as tkclass App:    def __init__(self):        root = tk.Tk()        root.bind_all("<1>", self.woot)        label1 = tk.Label(text="Label 1", name="label1")        label2 = tk.Label(text="Label 2", name="label2")        entry1 = tk.Entry(name="entry1")        entry2 = tk.Entry(name="entry2")        label1.pack()        label2.pack()        entry1.pack()        entry2.pack()        root.mainloop()    def woot(self, event):        print "woot!", event.widgetapp=App()

You might also be interested in my answer to the question How to bind self events in Tkinter Text widget after it will binded by Text widget? where I talk a little more about bindtags.

If you have a list that contains all your widgets, you could iterate over them and assign the events.

You mean something like this code which handles all mouse events handled with single function?

from Tkinter import *class ButtonHandler:    def __init__(self):              self.root = Tk()        self.root.geometry('600x500+200+200')        self.mousedown = False        self.label = Label(self.root, text=str(self.mousedown))        self.can = Canvas(self.root, width='500', height='400', bg='white')        self.can.bind("<Motion>",lambda x:self.handler(x,'motion'))        self.can.bind("<Button-1>",lambda x:self.handler(x,'press'))        self.can.bind("<ButtonRelease-1>",lambda x:self.handler(x,'release'))        self.label.pack()        self.can.pack()        self.root.mainloop()    def handler(self,event,button_event):        print('Handler %s' % button_event)         if button_event == 'press':            self.mousedown = True        elif button_event == 'release':            self.mousedown = False        elif button_event == 'motion':            if self.mousedown:                               r = 5                self.can.create_oval(event.x-r, event.y-r, event.x+r, event.y+r, fill="orange")        self.label.config(text=str(self.mousedown))button_event = ButtonHandler()