Скачать или смотреть Python Tutorial #17: in and not in 🐍

In this quick 10-minute tutorial, we’ll show you how to use Python’s in and not in operators to check whether a value exists in lists, strings, tuples, dictionaries, and more.

These operators are essential for writing clean, readable code when working with conditions and validating data.

We’ll cover:

How in and not in work

Practical examples with strings, lists, dictionaries, and sets

Common mistakes and how to avoid them

🎓 Perfect for Python beginners. All examples are shown using IDLE, Python’s built-in editor and shell — no setup required!

👉 Don’t forget to like, subscribe, and drop a comment if you have questions.

📌 Whether you're writing a shopping list app or checking email input, this video will help you get confident with Python membership testing.

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