FULL Python Lesson - Learn Dictionaries Records (GCSE Computer Science Revision or lesson)

Python dictionaries can feel confusing at first — but they’re one of the most powerful and important data structures you need to master for GCSE Computer Science. In this full lesson, we break down dictionaries into simple, clear steps so you understand exactly how key‑value pairs, lookups, updates, and iterations work in Python. Whether you’re studying AQA /OCR / Edexcel, revising for exams, or building stronger programming skills, this lesson shows you how to use dictionaries confidently and avoid the errors that many GCSE students make.