It uses Marshmallow underneath to do the data validation. And it was created by the same developers.

It's a great tool and I have used it a lot too, before having **FastAPI**.

!!! info
    Webargs was created by the same Marshmallow developers.

!!! check "Inspired **FastAPI** to"
    Have automatic validation of incoming request data.

The idea is to automate the acquisition and renewal of these certificates so that you can have **secure HTTPS, for free, forever**.

## HTTPS for Developers

Here's an example of how an HTTPS API could look like, step by step, paying attention mainly to the ideas important for developers.

### Domain Name

Trong lần khảo sát cuối cùng dành cho các lập trình viên Python, đã rõ ràng <a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">rằng đa số các lập trình viên sử dụng tính năng "autocompletion"</a>.

In der letzten Python-Entwickler-Umfrage wurde klar, <a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">dass die meist genutzte Funktion die „Autovervollständigung“ ist</a>.

### We Make Mistakes

We, as humans, make **mistakes**, all the time. Software almost *always* has **bugs** hidden in different places. 🐛

And we as developers keep improving the code as we find those bugs and as we implement new features (possibly adding new bugs too 😅).

### Small Errors Automatically Handled

### エディタのサポート

すべてのフレームワークは使いやすく直感的に使用できるように設計されており、すべての決定は開発を開始する前でも複数のエディターでテストされ、最高の開発体験が保証されます。

前回のPython開発者調査では、<a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">最も使用されている機能が「オートコンプリート」であることが明らかになりました。</a>

**FastAPI** フレームワークは、この要求を満たすことを基本としています。オートコンプリートはどこでも機能します。

ドキュメントに戻る必要はほとんどありません。

Ostatnia ankieta <abbr title="coroczna ankieta przeprowadza w środowisku programistów języka Python">Python developer survey</abbr> jasno wskazuje, że <a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">najczęściej używaną funkcjonalnością jest autouzupełnianie w edytorze</a>.

Son yapılan Python geliştiricileri anketinde, açık ara <a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">en çok kullanılan özellik "oto-tamamlama" idi.</a>.

Na última pesquisa do desenvolvedor Python ficou claro <a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">que o recurso mais utilizado é o "auto completar"</a>.

Todo o _framework_ **FastAPI** é feito para satisfazer isso. Auto completação funciona em todos os lugares.

В опросе Python-разработчиков было выяснено, <a href="https://www.jetbrains.com/research/python-developers-survey-2017/#tools-and-features" class="external-link" target="_blank">что наиболее часто используемой функцией редакторов, является "автодополнение"</a>.