tkinter 调用两个函数

Question

Is it possible to make it so that a Tkinter button calls two function?

some thing like this maybe?:

from Tkinter import *

admin = Tk()
def o():
    print '1'

def t():
    print '2'
button = Button(admin, text='Press', command=o, command=t)
button.pack()

Answer 1

Make a new function that calls both:

def o_and_t():
    o()
    t()
button = Button(admin, text='Press', command=o_and_t)

Alternatively, you can use this fun little function:

def sequence(*functions):
    def func(*args, **kwargs):
        return_value = None
        for function in functions:
            return_value = function(*args, **kwargs)
        return return_value
    return func

Then you can use it like this:

button = Button(admin, text='Press', command=sequence(o, t))

Answer 2

The syntax you're trying for doesn't exist unfortunately. What you'd need to do is make a wrapper function that runs both of your functions. A lazy solution would be something like:

def multifunction(*args):
    for function in args:
        function(s)

cb = lambda: multifunction(o, t)
button = Button(admin, text='Press', command=cb)

Answer 3

you can use the sample way with lambda like this:

button = Button(text="press", command=lambda:[function1(), function2()])

Answer 4

Correct me if I'm wrong, but whenever I needed a button to operate multiple functions, I would establish the button once:

button = Button(admin, text='Press', command=o)

And then add another function using the .configure() :

button.configure(command=t)

Added to your script, it would look like this

from Tkinter import *

admin = Tk()
def o():
    print '1'

def t():
    print '2'

button = Button(admin, text='Press', command=o)
button.configure(command=t)
button.pack()

This could run multiple functions, well as a function and a admin.destroy or any other command without using a global variable or having to redefine anything