Python Day 9: Introduction to Constants - Learn How to Store Fixed Values in Python
14 January 2026·2 min
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Welcome to Day 9 of The Complete Python Bootcamp.
In this session, you will be introduced to constants, which are values that stay the same throughout your entire program.
Constants are essential when you want to store information that should never change during execution. They help maintain code integrity, reduce mistakes and make your programs easier to understand. Today, you will learn how to define constants in Python, why they matter and how to use them effectively in real programs.
By the end of this lesson, you will know exactly how constants support clean, organised and reliable code.
✅ What You Will Learn in Day 9
• What constants are and why they are important in programming
• How to create constants in Python using simple naming conventions
• When to use constants instead of variables
• How constants improve code clarity and prevent accidental changes
• How constants help with data organisation in larger programs
• Examples of constants in real world applications and projects
This session gives you another core tool for writing professional and maintainable Python code.
🌍 Why Constants Matter in Python
Using constants helps you:
• Protect values that should never change
• Avoid programming errors caused by accidental modification
• Make your code easier to read and understand
• Create cleaner and more reliable logic
• Build programs that behave consistently every time they run
Constants reinforce structure and stability across your projects.
🎯 Who This Session Is Designed For
• Complete beginners learning programming fundamentals
• Students preparing for careers in development, analytics or automation
• Learners who want to create organised and maintainable code
• Anyone who wants to understand the core principles behind program structure
• Viewers who want clear examples that make coding easier to learn
This session adds another important building block to your Python toolkit.
🔥 Start Writing Reliable Python Code Today
Once you understand how to use constants, you will be able to write safer, more predictable and more professional code.
This lesson takes you one step further into real programming skills.
👉 Subscribe so you do not miss Day 10
👉 Comment with an example of a constant you think is useful
👉 Share this video with someone learning Python
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