Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install python-multipart
```

///

## Import `File` and `Form` { #import-file-and-form }

{* ../../docs_src/request_forms_and_files/tutorial001_an_py39.py hl[3] *}

 * provide an instance of the requested type. It can be applied to:
 * <ul>
 *   <li>Constructors</li>
 *   <li>Methods</li>
 *   <li>Fields</li>
 * </ul>
 * <p>
 * Example usage:
 * <pre>
 * public class MyService {
 *     private final Repository repository;
 *
 *     {@literal @}Inject
 *     public MyService(Repository repository) {
 *         this.repository = repository;

Usa cualquier tipo de modelo, cualquier tipo de clase, cualquier tipo de base de datos que necesites para tu aplicación. **FastAPI** te cubre con el sistema de inyección de dependencias.

## Tamaño del código { #code-size }

Este ejemplo podría parecer extenso. Ten en cuenta que estamos mezclando seguridad, modelos de datos, funciones de utilidad y *path operations* en el mismo archivo.

Pero aquí está el punto clave.

## Possible Solution
<!--- Not obligatory, but suggest a fix/reason for the bug, -->
<!--- or ideas how to implement the addition or change -->

## Steps to Reproduce (for bugs)
<!--- Provide a link to a live example, or an unambiguous set of steps to -->
<!--- reproduce this bug. Include code to reproduce, if relevant -->
<!--- and make sure you have followed https://github.com/minio/minio/tree/release/docs/debugging to capture relevant logs -->

2018/12/26 17:49:36 listening on http://localhost:8888/
```

This will open the login page of keycloak, upon successful login, STS credentials along with any buckets discovered using the credentials will be printed on the screen, for example:

```
{
  "buckets": [
    "bucket-x"
  ],
  "credentials": {
    "AccessKeyID": "6N2BALX7ELO827DXS3GK",
    "SecretAccessKey": "23JKqAD+um8ObHqzfIh+bfqwG9V8qs9tFY6MqeFR+xxx",

At any point in time you can switch from `MINIO_KMS_SECRET_KEY` to a full KMS
deployment. You just need to import the generated key into KES - for example via
the KES CLI once you have successfully setup KES:

```sh
kes key create my-minio-key OSMM+vkKUTCvQs9YL/CVMIMt43HFhkUpqJxTmGl6rYw=
```

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.example.group</groupId>
  <artifactId>valid-version-sha1plus</artifactId>
  <version>${sha1}${wrong}</version>

  <description>
    This will test if the validation for the ci friendly versions
    is working correct.

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.example.group</groupId>
  <artifactId>valid-version-wrong</artifactId>
  <version>${wrong}</version>

  <description>
    This will test if the validation for the ci friendly versions
    is working correct.
  </description>

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.example.group</groupId>
  <artifactId>valid-version-revision</artifactId>
  <version>${revision}</version>

  <description>
    This will test if the validation for the ci friendly versions
    is working correct.

    where an integer (but not int typed) is used. Encoding this as a float
    results in failed round-tripping between encode and parse.
    Our Id type is a prime example of this.

    >>> decimal_encoder(Decimal("1.0"))
    1.0

    >>> decimal_encoder(Decimal("1"))
    1

    >>> decimal_encoder(Decimal("NaN"))
    nan
    """