Python Tkinter one callback function for two buttons

Question

I have been looking around for a long time for answers to this question but still hasn\'t find anything. I am creating a GUI using Tkinter, and I have two buttons that do mo

Answer 1

If you want to pass the actual widget into the callback, you can do it like this:

button1 = Button(master, text='Search')
button1.configure(command=lambda widget=button1: DoSomething(widget))
button2 = Button(master, text='Search')
button2.configure(command=lambda widget=button2: DoSomething(widget))

Another choice is to simply pass in a literal string if you don't really need a reference to the widget:

button1 = Button(..., command=lambda widget="button1": DoSomething(widget))
button2 = Button(..., command=lambda widget="button2": DoSomething(widget))

Another choice is to give each button a unique callback, and have that callback do only the thing that is unique to that button:

button1 = Button(..., command=ButtonOneCallback)
button2 = Button(..., command=ButtonTwoCallback)

def ButtonOneCallback():
    value = user_input.get()
    DoSomething(value)

def ButtonTwoCallback():
    value=choice.get(choice.curselection()[0])
    DoSomething(value)

def DoSomething(value):
    ...

There are other ways to solve the same problem, but hopefully this will give you the general idea of how to pass values to a button callback, or how you can avoid needing to do that in the first place.