Getting a variable from one class to another class

[menator01]

Just wanted to post what I came up with. Maybe it will help someone in the future.

#! /usr/bin/env python3.8
'''Docstring'''

###### Do the imports ######
import tkinter as tk
from tkinter import ttk, messagebox
import string
from functools import partial
from PIL import Image, ImageTk
from  modules import database as db


###### Intiate the window ######
class RootWindow:
    '''Docstring'''
    def __init__(self, master):
        self.master = master
        self.master.columnconfigure(0, weight=1)
        self.master.rowconfigure(0, weight=1)


        ###### Intiate all of our main containerframes ######
        self.logo_frame()
        self.letter_frame()
        self.container_frame()
        self.title_frame()
        self.recipe_frame()
        self.footer_frame()

        ###### Initate the widgets ######
        Child(self.logoframe, self.footerframe)
        Child2().lettermenu(self.letterframe, self.containerframe)
        Child3().titlemenu(self.containerframe)

    ###### This sets all the container frames ######
    ###### Need to create a class for generic ######
    ###### frames to eliminate repetitive code #####
    def logo_frame(self):
        '''logo frame'''
        self.logoframe = ttk.Frame(self.master, border=5, relief='ridge')
        self.logoframe.grid(column=0, row=0, sticky='new')
        self.logoframe.grid_columnconfigure(0, weight=3)

    def letter_frame(self):
        '''letterframe'''
        self.letterframe = ttk.Frame(self.master, border=5, relief='ridge')
        self.letterframe.grid(column=0, row=1, sticky='new')
        for i in range(26):
            self.letterframe.grid_columnconfigure(i, weight=3)

    def container_frame(self):
        '''Container frame will hold two frames. Title frame and recipe frame'''
        self.containerframe = ttk.Frame(self.master)
        self.containerframe.grid(column=0, row=2, sticky='nw')
        self.containerframe.grid_columnconfigure(0, weight=3)

    def title_frame(self):
        '''Title Frame'''
        self.titleframe = ttk.Frame(self.containerframe, border=5, relief='ridge')
        self.titleframe.grid(column=0, row=0, sticky='nw')
        self.titleframe.grid_columnconfigure(0, weight=3)

    def recipe_frame(self):
        '''Recipe Frame'''
        self.recipeframe = ttk.Frame(self.containerframe, border=5, relief='ridge')
        self.recipeframe.grid(column=1, row=1)
        self.recipeframe.grid_columnconfigure(0, weight=3)

    def footer_frame(self):
        '''footer'''
        self.footerframe = ttk.Frame(self.master, border=5, relief='ridge')
        self.footerframe.grid(column=0, row=3, sticky='new')
        self.footerframe.grid_columnconfigure(0, weight=3)

###### This class defines and displays header and footer ######
class Child:
    '''logo'''
    def __init__(self, logoframe, footerframe):
        self.my_logo(logoframe)
        self.my_footer(footerframe)

    def my_logo(self, logoframe):
        '''doc'''
        load = Image.open('/home/johnny/Desktop/CookBook/images/cookbook_logo.png')
        render = ImageTk.PhotoImage(load)
        self.logo = ttk.Label(logoframe, image=render)
        self.logo.image = render
        self.logo.grid(column=0, row=0)

    def my_footer(self, footerframe):
        '''footer'''
        style = ttk.Style()
        style.map('Footer.TLabel', \
        foreground=[('pressed', 'firebrick'), ('active', 'red')], \
        background=[('pressed', '!disabled', 'gray86'), ('active', 'gray86')] \
        )
        style.configure('Footer.TLabel', foreground='blue', \
        font=('Times', 12, 'normal', 'underline'))
        self.footer = ttk.Button(footerframe, text='My Footer', \
        style='Footer.TLabel', cursor='hand2')
        self.footer.grid(column=0, row=0, ipady=3)


###### Class produces the letter menu ######
class Child2:
    '''doc'''
    def __init__(self):
        pass

    def lettermenu(self, letterframe, containerframe):
        '''lettermenu'''
        letters = string.ascii_uppercase
        i = 0
        style = ttk.Style()
        style.configure('Btn.TButton', width=4)
        for letter in letters:
            button = ttk.Button(letterframe, text=letter, style='Btn.TButton', \
            command=partial(Child3().titlemenu, containerframe, letter=letter))
            button.grid(column=i, row=0, sticky='new')
            i += 1


###### This class retrieves and displays recipe titles ######
class Child3:
    '''doc'''
    def __init__(self):
        pass

    def titlemenu(self, containerframe, letter='a'):
        '''title menu'''

        ###### Query the database for recipe titles from our letter menu defaults to a ######
        data = db.Database().title_query(letter=letter)

        ###### Create the canvas and scrollbar ######
        canvas = tk.Canvas(containerframe)
        scrollbar = ttk.Scrollbar(containerframe, orient='vertical', command=canvas.yview)
        scrollable_frame = ttk.Frame(canvas)

        scrollable_frame.bind(
            '<Configure>',
            lambda e: canvas.configure(scrollregion=canvas.bbox('all'))
        )

        canvas.create_window((0, 0), window=scrollable_frame, anchor='nw')
        canvas.configure(yscrollcommand=scrollbar.set)

        ###### If there are not any results returned, display message ######
        if not data:
            msg = messagebox.showerror(title='No listing', \
            message='Sorry, there have not been any recipes added starting with ' + letter)
            if msg == 'ok':
                return True
        else:
            ###### Setup our look for the recipe menu ######
            style = ttk.Style()
            style.map('L.TLabel', \
            background=[('pressed', '!disabled', 'gray86'), ('active', '#ffffee')], \
            foreground=[('pressed', 'red'), ('active', 'red')])

            style.configure('L.TLabel', relief='flat', padding=2, foreground='blue')

            ###### Loop through and display the return results from the database ######
            for recipe_id, title in data:
                title = ttk.Button(scrollable_frame, text=title.title(), \
                style='L.TLabel', cursor='hand2')
                title.grid(column=0, row=recipe_id, sticky='nw')

            scrollbar.grid(column=0, row=0, sticky='nsw')
            canvas.grid(column=1, row=0, sticky='nsw')
def main():
    '''Docstring'''
    root = tk.Tk()
    RootWindow(root)
    root.mainloop()

if __name__ == '__main__':
    main()