Layout Kalkulator 1

import tkinter as tk

class Page01(tk.Frame):

    def __init__(self, parent, AppSettings):
        self.settings = AppSettings

        super().__init__(parent)
        self.configure(bg="white")
        self.pack(fill="both", expand=True)

        #CREATE FRAMES
        self.create_frame01()
        self.create_frame02()
        self.create_frame03()

    def create_frame01(self):
        self.frame01 = tk.Frame(self, bg="black", height=self.settings.height//3)
        self.frame01.pack(fill="x")

    def create_frame02(self):
        self.frame02 = tk.Frame(self, bg="grey")
        self.frame02.pack(fill="both", expand=True)

    def create_frame03(self):
        self.frame03 = tk.Frame(self.frame02, bg="orange", width=self.settings.width//4)
        self.frame03.pack(side="right", fill="y")