python Tkinter calling class methods from button press

Question

I am using Tkinter to create a GUI. I have a class for setting up all my GUI elements and another class that does some functionality.

class class_one():

    def method_one(self):
        do_something()

class GUI()

    def __init__(self):
        button = Button(self, text="button", command=call_class_one_method)
        button.pack()

    def call_class_one_method(self):
         c = class_one()
         c.method_one()

Is this above code the correct way for calling other class methods or should I be instantiating the class in the GUI's __init__ method? Or perhaps something else?

Bryan Oakley · Accepted Answer · 2016-05-12 14:07:35Z

3

In this specific case you should instantiate it in GUI.__init__ unless there's a reason you need to create a new instance every time they click the button.

class GUI()

    def __init__(self):
        self.class_one = class_one()
        button = Button(self, text="button", command=self.class_one.method_one)
        ...

answered May 12, 2016 at 14:07

Bryan Oakley

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Comments

Matthias Schreiber · Accepted Answer · 2016-05-12 14:06:58Z

0

Unless you actually need a new instance of the class for every button press (which doesn't seem to be the case in your example), you should instantiate it in init.

answered May 12, 2016 at 14:06

Matthias Schreiber

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