Python Has a Hidden Contract — And It Changes Everything
Most Python developers use len(), indexing, and for loops
every day — without knowing what's actually happening underneath.
In this episode, we go deep.
You'll learn:
→ What the Python Data Model is — and why it changes everything
→ How CPython actually handles len() at the C level
→ Why two methods can unlock six features for free
→ The difference between a Pythonic class and a foreign one
→ What Protocols and Duck Typing really mean
We build a complete French Deck from scratch — and use it to
see the Data Model in action.
This is Episode 1 of a full Data Structures course in Python,
combining two books:
• Hands-On Data Structures and Algorithms with Python — Dr. Basant
• Fluent Python — Luciano Ramalho
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🔖 Chapters:
00:00 — Hook: Do you actually know how Python works?
02:30 — The Contract: What is the Python Data Model?
08:00 — CPython Internals: What really happens with len()
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📚 Books used in this course:
• Hands-On Data Structures and Algorithms with Python (3rd Ed.)
• Fluent Python (2nd Ed.)
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🗂️ Full Course Playlist:
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