How can I combine, organize, and solve the Python tkinter with Parent, child, and application classes?

Heya,

The issue you’re facing is because the Gyerek class inherits from the Szulo class and, during initialization, it calls super().__init__(container). This means that when you create an instance of Gyerek, both the Szulo and Gyerek initialization code will be run, resulting in two images being created and displayed: the image from the parent class (kep1) and the one from the child class (kep2).

Since the child (Gyerek) class is designed to inherit from the parent (Szulo), it will always run the Szulo initialization, which packs the button with the kep1 image. Then the Gyerek class adds its own image (kep2), leading to both images being shown.

If you want only one image in the child class (Gyerek), you’ll need to modify the design a bit

You could move the button creation for kep1 into a separate method and call it only when needed:

import tkinter as tk
from tkinter import ttk


class Szulo(ttk.Frame):
    def __init__(self, container):
        super().__init__(container)
        self.kep1 = tk.PhotoImage(file='../globalkep/z11.png')

    def create_button(self):
        ttk.Button(self, image=self.kep1).pack(padx=5, pady=5)


class Gyerek(Szulo):
    def __init__(self, container):
        super().__init__(container)
        self.kep2 = tk.PhotoImage(file='../globalkep/p11.png')
        ttk.Button(self, image=self.kep2).pack(padx=5, pady=5)


class App(tk.Tk):
    def __init__(self):
        super().__init__()
        self.geometry('600x500+500+50')
        self.configure(bg='green')

        szulo = Szulo(self)
        szulo.pack(padx=20, pady=20)
        szulo.create_button()

        gyerek = Gyerek(self)
        gyerek.pack(padx=20, pady=20)


if __name__ == '__main__':
    app = App()
    app.mainloop()