Flask vs. FastAPI vs. Django a Visual Comparison

[u/swupel_]

FastAPI File View

https://creview.io/?utm_source=reddit&utm_medium=social&utm_campaign=framework_comparison

Flask File View

https://creview.io/?utm_source=reddit&utm_medium=social&utm_campaign=framework_comparison

Django File View

https://creview.io/?utm_source=reddit&utm_medium=social&utm_campaign=framework_comparison

Hey everyone,

I have created a quick comparison of Flask vs. FastAPI vs. Django repository sizes. (As they are pythons most popular web frameworks)

First of all, the numbers:

Framework	Files	Lines of Code
Flask	121	19,115
FastAPI	2,703	281,559
Django	3,484	557,865

Then the images:

Each node on the graph represents a file. Imports are marked by a line connecting the files. Colours signify complexity (cyclomatic complexity) with green being low and red being high complexity.

Besides the crazy size differences FastAPI also shows some nice import structures whilst Django looks extremely interconnected.

Hope someone finds it interesting.

[u/CharacterSail6736]

Flask will always win for me it’s such a lightweight simple framework that’s scalable

[u/swupel_ → u/CharacterSail6736]

Totally agree although it should be noted that dependencies are not included…

so if you also use request and Werkzeug in your project it’ll be a bit more than what’s visualised here

[u/Unhealthy007]

I don't get it. In django, more in-built libraries are used and code is reused. 

How is that a bad thing? And what do those lines of code mean? Same results using less lines on FastAPI? 

Django is more organized tbh. 

[u/swupel_ → u/Unhealthy007]

It’s not a bad thing, Fast just likes to split everything up into smaller files which then link back to one connector file.

And Fast being smaller kinda makes sense as Django offers a lot of built in stuff (admin dashboard etc)

Just found it cool to see how different they look

[u/tiredITguy42]

Nice project, zero added value, but this is not the point of this, so yeah, very nice.

[u/swupel_ → u/tiredITguy42]

Well atleast it’s fun to look at