Python Data Structures: Quick Visual Guide 🐍

🔹 Lists: Ordered, mutable, created with [ ]
→ Access/modify via index: myList[0], myList[-1]
→ Methods: .append(), .sort(), .pop()
→ Mixed types allowed
→ Loop: for item in myList:

🔹 Tuples: Immutable, ordered → (1, 2, 3)

🔹 Sets: Unordered, unique elements

🔹 Dictionaries: Key-value pairs, fast lookups

🔹 Arrays: Mainly for numeric data (array/NumPy)

🔑 Key Points:
✅ Indexing: 0 to len-1 (forward), -1 backward
✅ Assignment myList[i] = x modifies in place
✅ Lists are the most versatile & commonly used

This is the perfect cheat sheet for beginners and for quick revision!