This solved having to write YAML (another syntax) inside of Python docstrings.

This combination of Flask, Flask-apispec with Marshmallow and Webargs was my favorite backend stack until building **FastAPI**.

Using it led to the creation of several Flask full-stack generators. These are the main stacks I (and several external teams) have been using up to now:

In this case, it would be better to get **one extra server** and run some processes on it so that they all have **enough RAM and CPU time**.

At the same point, you try to trigger the autocomplete with `Ctrl+Space` and you see:

<img src="/img/python-types/image02.png">

With that, you can scroll, seeing the options, until you find the one that "rings a bell":

<img src="/img/python-types/image03.png">

## More motivation

Check this function, it already has type hints:

```Python hl_lines="1"

Python">parsing</abbr> des données provenant des requêtes entrantes.

Webargs est un outil qui a été créé pour fournir cela par-dessus plusieurs frameworks, dont Flask.

Il utilise Marshmallow pour effectuer la validation des données. Et il a été créé par les mêmes développeurs.

C'est un outil formidable et je l'ai beaucoup utilisé aussi, avant d'avoir **FastAPI**.

!!! info