MIXINS in Python explained with an example

[@Raisincookies55]

short and to the point. great work

[@EmadRahman_eee]

Thank you very much for the video.

[@python-for-everyone]

You are welcome!

[@bomthanhha]

I think dependency injection to achieve the same thing without using inheritance. For example, I can assign self.serializer = Serializer() at def __init__(). Am I thinking correctly? When should I decide to use dependency injection vs mixins and vice versa?

[@python-for-everyone]

Dependency injection is the technique to inject objects into other objects. Could it be you mean when to favor composition over inheritance? In this video, I show a scenario where DI and composition work very well: ruclips.net/video/BdMO1IR-800/видео.html

[@Иван-д6ф6с]

Great!

[@python-for-everyone]

thanks!

[@Иван-д6ф6с]

Can you make video abou SOLID principles?

[@python-for-everyone]

Here is a youtube video: ruclips.net/video/VqeBgD5TuAQ/видео.html on the Open Closed Principle and if you want to support me, you can enroll in my S.O.L.I.D. course on Udemy: pythonforeveryone.com/python-solid-online-training.html

[@TomasHayes]

I'm struggling with IDE typing errors when a mixin access to properties it doesn't posses (yet).
Any advice on how to handle that properly? Thank you!

[@python-for-everyone]

Yep, that is a problem of dynamically typed languages. There is no guarantee that attributes will be present. If you want to satisfy the type checker, you could use base classes or protocols.

[@rajdeepjadav6263]

Allways use dark mode and big fonts.