## Установка `PyJWT` { #install-pyjwt }

Нам необходимо установить `pyjwt` для генерации и проверки JWT-токенов на языке Python.

Убедитесь, что вы создали [виртуальное окружение](../../virtual-environments.md){.internal-link target=_blank}, активируйте его, а затем установите `pyjwt`:

<div class="termy">

```console

# Development - Contributing

First, you might want to see the basic ways to [help FastAPI and get help](help-fastapi.md){.internal-link target=_blank}.

## Developing

If you already cloned the <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">fastapi repository</a> and you want to deep dive in the code, here are some guidelines to set up your environment.

### Virtual environment

Именно поэтому, **FastAPI** сам предоставляет альтернативную документацию API (используя ReDoc), которую можно получить по адресу: <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>.

<img src="/img/tutorial/path-params/image02.png">

Здесь мы рассмотрим пример с использованием <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">SQLModel</a>.

**SQLModel** построен поверх <a href="https://www.sqlalchemy.org/" class="external-link" target="_blank">SQLAlchemy</a> и Pydantic. Его создал тот же автор, что и **FastAPI**, чтобы он идеально подходил для приложений FastAPI, которым нужны **SQL базы данных**.

/// info | Informação

Para usar formulários, primeiro instale <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Certifique-se de criar um [ambiente virtual](../virtual-environments.md){.internal-link target=_blank}, ativá-lo e então instalá-lo, por exemplo:

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

///

## Importe `Form` { #import-form }

import java.lang.annotation.Target;

import com.google.inject.ScopeAnnotation;

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Indicates that annotated component should be instantiated before mojo execution starts and discarded after mojo
 * execution completes.
 *
 * @since 3.1.2
 */
@Target({TYPE})
@Retention(RUNTIME)
@ScopeAnnotation

Response einen sinnvollen `WWW-Authenticate`-Header zurück, gemäß den HTTP-Spezifikationen, <a href="https://datatracker.ietf.org/doc/html/rfc7235#section-3.1" class="external-link" target="_blank">RFC 7235</a>, <a href="https://datatracker.ietf.org/doc/html/rfc9110#name-401-unauthorized" class="external-link" target="_blank">RFC 9110</a>.

Aber falls Ihre Clients aus irgendeinem Grund vom alten Verhalten abhängen, können Sie darauf zurückgreifen, indem Sie in Ihren Sicherheitsklassen die Methode...

* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto" class="external-link" target="_blank">X-Forwarded-Proto</a>
* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host" class="external-link" target="_blank">X-Forwarded-Host</a>

///

            }

            return !"parent".equals(field.getName());
        }

        private void evaluateArray(Object target) throws ModelInterpolationException {
            int len = Array.getLength(target);
            for (int i = 0; i < len; i++) {
                Object value = Array.get(target, i);
                if (value != null) {
                    if (String.class == value.getClass()) {

href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">‘X-’ 접두어를 사용하여</a> 커스텀 사설 헤더를 추가할 수 있습니다.

하지만, 여러분이 브라우저에서 클라이언트가 볼 수 있기를 원하는 커스텀 헤더가 있는 경우, CORS 설정에 이를 추가해야 합니다([CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md){.internal-link target=_blank}에서 자세히 알아보세요). `expose_headers` 매개변수를 사용하여 <a href="https://www.starlette.dev/middleware/#corsmiddleware" class="external-link" target="_blank">Starlette의 CORS 설명서</a>에 문서화된 대로 설정할 수 있습니다....