CS50 Week 6 Notes - File I/O & Persistent Data Storage in Python (Free Download)

Master Python File I/O with These Beginner-Friendly Notes! 📂🐍

Want to store and process data beyond a single program run? These notes simplify file reading, writing, and handling CSVs & binary files — key topics covered in Harvard’s CS50P.

💡 What You’ll Learn:

• ✅ How to read and write text files efficiently
• ✅ Append data to files without overwriting existing content
• ✅ Work with CSV files for structured data storage
• ✅ Handle file-related errors to avoid crashes
• ✅ Process binary files (like images) with Python
• ✅ Use external libraries (Pillow) for image manipulation

🚀 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.