Python GUI Applications — Tkinter

Overview

A collection of Python desktop applications built with Tkinter, demonstrating progressive GUI development from simple windows through to fully functional applications with file I/O and menus.

Applications

1. Hello World GUI (intro.py)

A minimal Tkinter window demonstrating the basics of GUI creation, labels and button event handling.

Run it:

python intro.py

2. Interactive Button App (app.py)

Demonstrates dynamic UI updates — clicking a button changes both the label text and window background colour.

Run it:

python app.py

3. Greeting App with Input Validation (input.py)

A user input form with validation — handles empty input gracefully and provides colour-coded feedback to the user.

Run it:

python input.py

4. Calculator (calc.py)

A fully functional calculator application featuring:

• Grid-based responsive layout
• Dynamic button creation from a data structure
• Expression evaluation with error handling

Run it:

python calc.py

5. Text Editor (box.py)

A functional text editor demonstrating advanced Tkinter features:

• File open and save dialogs
• Menu bar with File menu
• Resizable layout using grid weight configuration
• Checkbox input and messagebox dialogs
• Window close confirmation dialog

Run it:

python box.py

6. School Enrolment System (class_complete.py)

An OOP-based school management system demonstrating:

• Class inheritance (Student and Parent both inherit from Person)
• Bidirectional relationships between classes
• Type hints on method parameters
• Real-world domain modelling

Run it:

python class_complete.py

Concepts Demonstrated

• Tkinter window creation and configuration
• Event-driven programming with callbacks
• Grid and pack layout managers
• File I/O with open/save dialogs
• Menu bars and messageboxes
• Input validation and user feedback
• OOP inheritance and class relationships
• Dynamic widget creation from data structures

Tools Used

• Python 3.13
• Tkinter (Python standard library)
• No external dependencies required