Python TypeVar and Generic Types explained
In this video, I explain Python Generics and TypeVar in great detail, why they are better than type 'Any', and provide 2 practical examples.
You’ll learn how to write cleaner, more flexible, and type-safe code by leveraging type hints. Also, I compare the syntax for defining generic types before Python 3.12 and from 3.12+. This video is perfect for anyone trying to level up their Python skills.
🔍 What’s covered:
0:00 What is TypeVar, type variable, generic typing, and what are they used for
0:33 Examples walk-through. Enabling type checking in VsCode
1:17 Example 1: Creating a generic function. TypeVar vs Union of Types
5:12 What I struggled with when I learned about generic typing in Python
5:51 Example 2: Implementing a generic queue class from scratch
10:56 Testing the generic queue
11:58 Comparing syntax before and after Python 3.12
13:44 How to constrain TypeVar to certain types
14:31 Testing the numeric queue
15:52 Something that I couldn't figure out about... (help needed)
18:00 Type aliases before and after Python 3.12
19:20 Outro
📂 Code on GitHub:
👉 https://github.com/eukosh/jad-example...
💬 What’s your take on generics in Python?
Did this video help make it clearer for you?
🐍 More Python content coming soon, follow for more!
=========
Hi friend, my name is Eugene and I'm just a dev 👨🏼💻
I've been in tech for 5 years, working as a Data Engineer 📊
Join me on this journey, and let’s build an honest, open, supportive, authentic dev community of learners and builders.
On this page of the site you can watch the video online Python TypeVar and Generic Types explained with a duration of hours minute second in good quality, which was uploaded by the user Just a Dev 01 August 2025, share the link with friends and acquaintances, this video has already been watched 712 times on youtube and it was liked by 24 viewers. Enjoy your viewing!
