State Design Pattern Explained with Python Example | Low Level Design - Lesson 17

Driving shows 20 min ETA, walking shows 1 hour, cycling shows 40 min... same destination, different behaviour based on transport mode. That's the State Design Pattern!

In this video, I explain the State Pattern using a Transport Mode example with ETA and directions. Instead of writing messy if-else for every mode, each state handles its own behaviour cleanly.

🔥 What you'll learn:
✅ What is State Design Pattern
✅ When and why to use it
✅ Transport mode example with ETA and directions
✅ How state transitions work cleanly
✅ Bad code with if-else vs clean code with State Pattern
✅ Difference between State Pattern and Strategy Pattern
✅ How State Pattern is asked in LLD interviews

📚 This is part of my FREE Low Level Design (LLD) Course in Python. Subscribe for the full Design Patterns series!

👉 LLD Playlist: https://www.youtube.com/playlist?list=PLhR2IpV1b2Fxgj9hd-SF2da_fGAn7iH-l

👉 Enroll in this Course: https://codeanddebug.in/course/low-level-system-design-in-python

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