}
```

Again, doing just that declaration, with **FastAPI** you get:

* Editor support (completion, etc.), even for nested models
* Data conversion
* Data validation
* Automatic documentation

## Special types and validation { #special-types-and-validation }

Apart from normal singular types like `str`, `int`, `float`, etc. you can use more complex singular types that inherit from `str`.

||         || system level                              || user level 
*----------+--------------------------------------------+-----------------------+
|| POSIX   | <<</etc/mavenrc>>>\
||         | <<</usr/local/etc/mavenrc>>> (since 3.8.2) | <<<$HOME/.mavenrc>>> 
*----------+--------------------------------------------+-----------------------+

* API keys en:
    * Headers.
    * Parámetros de query.
    * Cookies, etc.

Además de todas las características de seguridad de Starlette (incluyendo **cookies de sesión**).

Todo construido como herramientas y componentes reutilizables que son fáciles de integrar con tus sistemas, almacenes de datos, bases de datos relacionales y NoSQL, etc.

### Inyección de dependencias { #dependency-injection }

* Seleccionar "Python".
* Ejecutar el depurador con la opción "`Python: Current File (Integrated Terminal)`".

Luego, iniciará el servidor con tu código **FastAPI**, deteniéndose en tus puntos de interrupción, etc.

Así es como podría verse:

<img src="/img/tutorial/debugging/image01.png">

---

Si usas PyCharm, puedes:

* Abrir el menú "Run".
* Seleccionar la opción "Debug...".

Voici un petit bout de cette histoire.

## Alternatives

Je crée des API avec des exigences complexes depuis plusieurs années (Machine Learning, systèmes distribués, jobs asynchrones, bases de données NoSQL, etc), en dirigeant plusieurs équipes de développeurs.

Dans ce cadre, j'ai dû étudier, tester et utiliser de nombreuses alternatives.

L'histoire de **FastAPI** est en grande partie l'histoire de ses prédécesseurs.

class HTTPException(StarletteHTTPException):
    """
    An HTTP exception you can raise in your own code to show errors to the client.

    This is for client errors, invalid authentication, invalid data, etc. Not for server
    errors in your code.

    Read more about it in the
    [FastAPI docs for Handling Errors](https://fastapi.tiangolo.com/tutorial/handling-errors/).

    ## Example

    ```python

    }

    /**
     * Enumeration of supported protocol types for URI validation.
     */
    public enum ProtocolType {
        /**
         * Web protocols (http, https, etc.).
         */
        WEB,
        /**
         * File protocols (file, etc.).
         */
        FILE;
    }

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  4096;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  4096;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '

		echo "FAILED"
		purge "$WORK_DIR"
		exit 1
	fi

	"${PWD}/mc" mb --with-versioning minio/bucket

	for i in $(seq 1 4); do
		"${PWD}/mc" cp /etc/hosts minio/bucket/testobj

		sudo chown -R root. "${WORK_DIR}/disk${i}"

		"${PWD}/mc" cp /etc/hosts minio/bucket/testobj

		sudo chown -R ${USER}. "${WORK_DIR}/disk${i}"
	done