Creating our SmilieSelect class

We are going to pop up a small windowthat contains all available smileys as buttons. When the user clicks on one of these smiley buttons, the image will be inserted into their text_area.

Create a new Python file in your folder called smilieselect.py. In that file, begin with the following code:

import os
import tkinter as tk
import tkinter.ttk as ttk

class SmilieSelect(tk.Toplevel):
    smilies_dir = os.path.abspath(os.path.join(os.path.dirname(__file__),
                                  'smilies/'))

Our application needs to keep track of where these images are stored on the filesystem, since multiple classes will need to access them. We achieve this by setting a class variable on the SmilieSelect window called smilies_dir.

The smiley images will be stored in a folder named smilies, which will live in the folder holding the rest of our scripts. Go ahead and create this folder now:

def __init__(self, master, **kwargs):
    super().__init__(**kwargs)
    self.master...