TKinter : get variable in Python class and send it to another

Question

I need to send one variable from one class to other.

My code:

The class I get variable

class Application(tk.Tk):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        #TOOLBAR MENU
        toolbar = tk.Frame(self, bd = 1, relief = tk.RAISED)

        self.choicebutton = tk.Button(toolbar, command=self.choice)

        #TOOLBAR MENU
        toolbar = tk.Frame(self, bd = 1, relief = tk.RAISED)

The class I import variable :

class Frame1(tk.Frame):

    def __init__(self, parent, *args, **kwargs):
        super().__init__(parent, *args, **kwargs)
        

        a.Application.choicebutton.config(state="disabled")

I got error:

AttributeError: type object 'Application' has no attribute 'choicebutton'

You need to use the instance of Application to access choicebutton. — acw1668
– acw1668, Commented Aug 1, 2020 at 12:40

Jasmijn · Accepted Answer · 2020-08-01 12:49:25Z

1

Assuming parent is the Application object:

class Frame1(tk.Frame):

    def __init__(self, parent, *args, **kwargs):
        super().__init__(parent, *args, **kwargs)

        parent.choicebutton.config(state="disabled")

answered Aug 1, 2020 at 12:49

Jasmijn

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Comments

Ajay Kumar Chawla · Accepted Answer · 2020-08-01 12:50:49Z

0

change the last line into to

a.Application().choicebutton.config(state="disabled")

answered Aug 1, 2020 at 12:50

Ajay Kumar Chawla

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3 Comments

chepner Over a year ago

Thats' a fix; it's unclear whether creating a new instance of Application is the right thing to do, though. More likely, the instance of Frame is probably supposed to be associated with an existing instance.

acw1668 Over a year ago

What the point of creating a new instance of Application to just setting a checkbutton to disable state because the instance cannot be used later (as it is not assigned to a variable)?

Ajay Kumar Chawla Over a year ago

it is just a quick solution without changing much of the code. nothing else. there is no need to create a new instance.

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