CODEWITHSUNDEEP
python-3.xtkinterlistbox
LOKE2707
LOKE2707

Reputation: 312

Error while binding tkinter list box binding with a method in same class (Python)

I have written a class to create Listbox objects, I want to bind the list box with a method in the same class but I am getting attribute error. what am I doing wrong here??

class ListObj(tkinter.Listbox):

    def __init__(self, window, cname, r, c, rs, cs, sticky, bg, padx=5, pady=5, ipadx=0, ipady=0, **kwargs):
        self = tkinter.Listbox(window)
        self.grid(row=r, column=c, rowspan=rs, columnspan=cs, sticky=sticky, padx=padx, pady=pady,
                  ipadx=ipadx, ipady=ipady)
        self.bind('<<ListboxSelect>>', self.on_select)

    def on_select(self):
        pass

output:

AttributeError: 'Listbox' object has no attribute 'on_select'

Upvotes: 0

Views: 31

Answers (1)

Mike - SMT
Mike - SMT

Reputation: 15226

The line causing the problem is self = tkinter.Listbox(window). You do not need to tell self it is a listbox because it already inherits listbox in the class definition.

Do this instead:

class ListObj(tkinter.Listbox):
    def __init__(self, window, **kwargs):
        super().__init__()
        self.bind('<<ListboxSelect>>', self.on_select)

    def on_select(self):
        pass

You should use grid on the reference variable outside of the class. It is not the best option to use a geometry manager from inside of a class.

var_name = ListObj(var1, var2, var2 ...)

var_name.grid(configs....)

Upvotes: 1

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