Python Day 134: Building Your First Python Decorator
8 July 2026·6 min
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Welcome to Day 134 of The Complete Python Bootcamp.
In this session, you will explore a simple example of a decorator in Python and see how decorators work in practice for the first time.
Now that you understand the concepts behind closures, it is time to put that knowledge into action. This session demonstrates how decorators wrap existing functions, allowing you to extend or modify their behaviour without changing the original code. You will see how decorators provide a clean, elegant and reusable way to add functionality to your Python programs.
Today, you will learn how a basic decorator is created, how it wraps another function and how decorators make your code more modular and easier to maintain.
By the end of this lesson, you will have built your first decorator and developed a practical understanding of one of Python's most powerful programming features.
✅ What You Will Learn
• How to create a simple decorator in Python
• How decorators wrap existing functions
• How to enhance function behaviour without modifying the original code
• How closures and decorators work together
• How decorators improve code reuse and organisation
• How decorators are used in real Python applications
🌍 Why This Topic Matters
Learning how to build decorators helps you:
• Write cleaner and more reusable Python code
• Reduce duplicated functionality across programs
• Understand advanced Python programming techniques
• Build more modular and maintainable applications
• Prepare for working with professional Python frameworks
Decorators are widely used throughout Python libraries and frameworks because they provide a powerful way to extend functionality while keeping code simple and organised.
🎯 Who This Lesson Is For
• Beginners exploring advanced Python concepts
• Learners ready to build their first decorator
• Students strengthening their understanding of closures
• Anyone interested in writing elegant Python code
• Viewers preparing for professional Python development
🔥 Build Your First Real Python Decorator
This session marks an exciting milestone in your Python journey.
By creating your first decorator, you will transform the theory behind closures into practical code and discover why decorators are one of Python's most powerful and widely used features.
👉 Subscribe so you do not miss the next session
👉 Comment if this is your first time building a Python decorator
👉 Share this video with someone learning Python
🔎 Keywords
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