CS50P Week 4 Notes - Python Libraries & Modules for Code Reusability (Free Download)

Master Python Libraries & Modules with These Beginner-Friendly Notes! 📦🐍

Writing efficient and reusable code is essential in programming. These notes simplify libraries, modules, and command-line arguments — core topics covered in Harvard’s CS50P.

💡 What You’ll Learn:

• ✅ Understand modules, libraries, and packages in Python
• ✅ Import built-in libraries like random, math, statistics
• ✅ Install and use third-party libraries via pip install
• ✅ Pass command-line arguments with the sys module
• ✅ Create your own Python modules for reusable functions
• ✅ Debug common mistakes and improve program structure

🚀 Bonus:

• A handy checklist to track your progress
• Includes both PDF and Markdown formats!

💬 I’d love your feedback! Let me know what helped and what could be improved — your input helps me create better resources for learners like you.