Tkinter Object-Oriented Window
Summary: in this tutorial, you’ll learn how to apply object-oriented programming in Tkinter to make the code more organized.
Defining a Tkinter object-oriented window
The following simple program creates a root window and displays it on the screen:
import tkinter as tk
root = tk.Tk()
root.mainloop()Code language: Python (python)
When the program is getting more complex, you can use an object-oriented programming approach to make the code more organized.
The following program achieves the same result as the program above, but use a class instead:
import tkinter as tkclass App(tk.Tk):
def __init__(self):
super().__init__()
if __name__ == "__main__":
app = App()
app.mainloop()
Code language: Python (python)
How it works.
- First, define an
Appclass that inherits from thetk.Tkclass. Inside the__init__()method, call the__init__()method of thetk.Tkclass. - Second, create a new instance of the
Appclass and call themainloop()method to display the root window.
Another example of an object-oriented window in Tkinter
The following class represents a window that consists of a label and a button. When you click the button, the program displays a message box:
import tkinter as tk
from tkinter import ttk
from tkinter.messagebox import showinfoclass App(tk.Tk):
def __init__(self):
super().__init__()
# configure the root window
self.title('My Awesome App')
self.geometry('300x50')
# label
self.label = ttk.Label(self, text='Hello, Tkinter!')
self.label.pack()
# button
self.button = ttk.Button(self, text='Click Me')
self.button['command'] = self.button_clicked
self.button.pack()
def button_clicked(self):
showinfo(title='Information', message='Hello, Tkinter!')
if __name__ == "__main__":
app = App()
app.mainloop()
Code language: Python (python)
How it works.
- First, create a label and button in the
__init__()method of App class. - Second, assign the
button_clicked()method to the command option of the button. Inside thebutton_clicked()method, display a message box. - Third, move the application bootstrapping to the
if __name__ = "main"block.
Summary
- Use an object-oriented programming approach to make the code more organized.
- Define a class that inherits from the
tk.Tkclass. Always, call thesuper().__init__()from the parent class in the child class.