Pydantic Introduction - Models, Fields, Constrained Types, Validator Functions and Model Exports

In this video, we dive into the Pydantic library in Python. This is based on the following blog post:

We'll learn a number of things, including:

1. How to define Pydantic model classes and fields with type-annotations.
2. How to define Optional fields and constrained fields
3. How to work with complex Python types such as UUID, Enum and date objects
4. How to define a custom validator function for a field on the model
5. How to export models to JSON and Python dictionaries

📌 𝗖𝗵𝗮𝗽𝘁𝗲𝗿𝘀:
00:00 Intro
01:13 Analysis of the structure of the data to model
02:47 Installing Pydantic and Requests packages
04:02 Defining Pydantic model class
06:22 Creating Optional fields on the Pydantic model
11:09 Constrained fields in Pydantic
15:23 Using custom validator functions in Pydantic
19:54 Using Enums as types in Pydantic models
22:22 Exporting Pydantic models to dictionaries and JSON

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#python #pydantic #datascience

[chitreddysairam]

Awesome introduction to Pydantic. Will be grateful if you plan a video for Pydantic V2

[RedShipsofSpainAgain]

Btw, a way to display the JSON response in a much more readable way is to use the 'pprint()' function from the pprint module. Simply using pprint(response.json()) rather than print(response.json()) will give you a more legible rendering of your json response.
I find it super helpful when parsing through deeply nested JSON.

[robhafemeister]

Great video, perfect timing, working on a Django-Ninja project. Really look forward to your content.

[Profutbol]

You are an absolute legend. Truly, between this and your playlists on Django/HTMX, you have saved me from many a headache. Cheers, man.

[diegosantosmoto]

That's a great video. I code with javascript and I wanna learn python for web. 👍

[mercy.yerram]

This is a great video. Thank you very much. Im working on a project using pydantic library.

[je]

My new favorite Python channel. Job well done !

[swelanauguste]

I really look forward to your videos. Thanks a lot

[ekkalukeksook]

This is awesome. You make me love Python more than usual. Much obliged.

[joaquingonzalez]

Your tutorial save me from several headaches. Thanks for this I appreciate it 😎

[ProfeDuilio]

Excellent, thanks !
Please, could you show how use websockets with HTMX and FastAPI ???

[rolandovillcaarias]

When BaseModel is implemented in the same file, it works. But, if you define BaseModel in different file and import it, it raises Redundant Cyclic UHE

[ProfeDuilio]

Do you think it's a good idea to use Models, Fields and Constrained Types for an ETL (extract, transform and load) process in Data Engineering?

[SOHAILKHAN-iufu]

Sir make a video on django sub query please

[skyhappy]

A lot of this functionality is already in Django, which you have videos on. Why use Pydantic when Django has this built in?