Comment by gonational

I've had the misfortune of working in FastAPI a number of times, and, as somebody who has been using Django since 2008, Django developers have no idea how spoiled they are to have such a tremendous framework.

Django does not provide magic, but it's ORM is like pure sorcery compared to the garbage out there (SQLModel, etc.).

Django provides the necessary tools to build terrific software. However, it does not prescribe extra extraordinarily high-level architectural guidance, so it leaves that up to you. For example, if you are building an app that will have a main UI for users to login, a backend UI for managers to view reports, an API for consumption by outside developers, Django doesn't provide some kind of automatic recommended pattern for structuring your app to support all this. However, it provides the exact ingredients you need to do this on your own. In the example a gave, you would simply structure your directories to reflect the various UI / inputs modalities, and then point a path to each section (urls.py). If you want to host your API as a separate service, you just define a WSGI/ASGI app and pointed to a separate urls.py, then start that container using that WSGI/ASGI app, simple as that. Django does not have any kind of magical mono effect structure to it. It is just a collection of unbelievably useful and clean and simple API that you can use to compose software at least 5x more quickly then you can with e.g., FastAPI. I'm in the second team I've been in that is using FastAPI, and it is uncomfortably slow, you wouldn't even believe it. With FastAPI or other API/micro frameworks, I think the perception is that "it's just python" as if Django is something else, and so people start off app.py and they "see now I can start from this fresh canvas", and then they learn after spinning their wheels for two years that having a solid ORM is actually important, having migrations that are always correct and automatically generated is important, having an admin interface for viewing, creating, managing local/testing data while debugging things, etc. is important, having an ORM that lets you do aggregation and annotation so easily that you find yourself wanting to make reports just as an excuse to use these features, is important, having a template system that lets you generate dynamic pages without having to set up a full SPA for every little interface that you want to make allows you to make a quick prototype or even a permanent UI of some kind without having to involve a team of front end developers who will then begin to dictate your entire backend architecture through their litany of ever changing API endpoint requirements. Speaking of, the common pattern that I have noticed with SPA/API based develop is that the front end wants to be large and in charge, until it comes time to validate data inputs or have to do anything with data that requires looking at it holistically (for example, given a list of orders, if there are any orders that have items that are backordered, provide a warning at the top of the page… SPA developers completely crushed by this requirement, now the backend has to add additional information via the end point called "are there backorder items", etc.). So you end up with this hodgepodge of mess, instead of creating a prototype of your interface and then coming back and deciding which things need to be "reactive", and either shoehorning those things in or rewriting your UI because it's absolutely necessary.

This has become quite the rant, but as somebody who has worked on software for nearly 20 years and can hand write HTML, CSS, JavaScript, use Svelte / React, Python, Django, SQL, etc., I've learned a LOT and seen a lot and I can tell you absolute certainty that choosing Django for a new project is the absolute most effective choice you can make on your path to success.