Tkinter を利用して GUI アプリを作る際に，tab を利用する．
オブジェクト指向で書く．

実行結果

tab1

tab2

say hello ボタンを押すと以下が表示される．

Hello World at tab2

コード

#!venv/bin/python
# -*- coding: utf8 -*-

import tkinter as tk
import tkinter.ttk as ttk


class Application(ttk.Notebook):
    def __init__(self, master=None):
        super().__init__(master)
        self.master.title('window')

        tab1 = tk.Frame(self.master)
        self.add(tab1, text="tab1")
        Tab1(master=tab1)

        tab2 = tk.Frame(self.master)
        self.add(tab2, text="tab2")
        Tab2(master=tab2)

        self._quit_outside_widget()
        self.pack()

    def _quit_outside_widget(self):
        quit = tk.Button(self.master,
                         text="QUIT at outside",
                         command=root.destroy)
        quit.pack(side=tk.BOTTOM)


class Tab1(tk.Frame):
    def __init__(self, master=None):
        super().__init__(master)
        self._label_tab1_widget()
        self._quit_tab1_widget()
        self.pack()

    def _label_tab1_widget(self):
        label = tk.Label(self, text='Hello World at tab1')
        label.pack()

    def _quit_tab1_widget(self):
        quit = tk.Button(self,
                         text="QUIT at tab1",
                         command=root.destroy)
        quit.pack(side=tk.BOTTOM)


class Tab2(tk.Frame):
    def __init__(self, master=None):
        super().__init__(master)
        self._start_tab2_widget()
        self._quit_tab2_widget()
        self.pack()

    def _start_tab2_widget(self):
        start_button = tk.Button(self,
                                 text="say hello",
                                 command=self._hello)
        start_button.pack()

    def _quit_tab2_widget(self):
        quit = tk.Button(self,
                         text="QUIT at tab2",
                         command=root.destroy)
        quit.pack()

    def _hello(self):
        print("Hello World at tab2")


if __name__ == '__main__':
    root = tk.Tk()
    app = Application(master=root)
    app.mainloop()

widget の階層関係

ttk.Notebook (window)
- tk.Frame (tab1)
  - tk.Label (hello)
  - tk.Button (quit)
- tk.Frame (tab2)
  - tk.Button (hello)
  - tk.Button (quit)
- tk.Button (quit)