📚 Tkinter Practices - GUI with Python

This repository contains a collection of 14 educational exercises developed with Tkinter, Python's standard library for creating graphical user interfaces (GUI).

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🎬 Preview

🚦 Automatic Traffic Light - Practice 13

🧮 Full Calculator - Practice 14

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📋 Project Contents

This project is a series of progressive exercises ranging from basic concepts to more complex Tkinter applications:

🔹 Basic Practices (1-5)

• Practice 1: Basic 1000x500 window
• Practice 2: Window with custom title and background color
• Practice 3: Label with custom styles (font, colors, padding)
• Practice 4: Button that prints messages to the terminal
• Practice 5: Button that changes a label's text

🔹 Data Input and Forms (6-7)

• Practice 6: Text field with button to display the entered name
• Practice 7: Interactive questionnaire with multiple input fields

🔹 Layout with Frames (8-9)

• Practice 8: 4-frame grid (2x2) with different colors
• Practice 9: Nested frames with an inner button

🔹 Advanced Interactivity (10-11)

• Practice 10: Move a label horizontally with buttons
• Practice 11: Selection list (Listbox) with display of selected item

🔹 Complete Applications (12-14)

• Practice 12: Simple addition calculator with error validation
• Practice 13: Traffic light simulator with automatic switching and timer
• Practice 14: Full basic calculator with arithmetic operations, keyboard support and validation

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🎯 Learning Objectives

These practices cover the following core Tkinter concepts:

• ✅ Creating and configuring windows (Tk())
• ✅ Basic widgets: Label, Button, Entry, Listbox, Canvas
• ✅ Geometry managers: pack(), grid(), place()
• ✅ Event handling with command and bind()
• ✅ Layout organization with Frame and nested frames
• ✅ Input data validation
• ✅ Using timers with after()
• ✅ Pop-up messages with messagebox
• ✅ Advanced customization (colors, fonts, styles)

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🚀 Highlights

Practice 13: Automatic Traffic Light

• Realistic traffic light simulation with three lights (red, yellow, green)
• Automatic switching every 5 seconds
• Visual countdown timer
• Design using Canvas for graphical representation

Practice 14: Full Calculator

• Basic arithmetic operations (+, -, *, /)
• Parentheses and decimal support
• Keyboard shortcuts (Enter, Escape, Backspace)
• Expression validation with error handling
• Modern interface with color-coded buttons
• Clear and delete buttons

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📦 Requirements

Python 3.x
tkinter (included in standard Python installations)

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▶️ How to Run

1. Clone this repository:

git clone https://github.com/TheNarratorVIMMXX/tkinter-practices.git
cd tkinter-practices

2. Run any practice directly:

python practica_01.py
python practica_14.py  # Full calculator

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📚 Key Concepts Learned

1. Layout Management: Differences between pack(), grid() and place()
2. Event-Driven Programming: Event handling with callbacks
3. Data Validation: Using try-except blocks for user input
4. Global State: Managing global variables to maintain state
5. Timers and Animation: Using after() for time-based operations
6. Best Practices: Documentation, descriptive names, logic separation

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📄 License

This project is educational and available for free use for learning purposes. Allows anyone to use, study, modify, and share the software freely.

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🤝 Contributions

If you'd like to add more practices or improve existing ones, contributions are welcome!

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📧 Contact

• Author: Carlos Gabriel Magallanes López
• Email: cgmagallanes23@gmail.com
• Development Date: October 15-16, 2025

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