## Installation

Create and activate a <a href="https://fastapi.tiangolo.com/virtual-environments/" class="external-link" target="_blank">virtual environment</a> and then install FastAPI:

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

///

```Python hl_lines="9"
{!> ../../docs_src/cookie_params/tutorial001.py!}
```

////

/// note | Detalhes Técnicos

`Cookie` é uma classe "irmã" de `Path` e `Query`. Ela também herda da mesma classe em comum `Param`.

Mas lembre-se que quando você importa `Query`, `Path`, `Cookie` e outras de `fastapi`, elas são na verdade funções que retornam classes especiais.

///

class AddCommentData(BaseModel):
    addDiscussionComment: AddDiscussionComment


class AddCommentResponse(BaseModel):
    data: AddCommentData


class CommentsEdge(BaseModel):
    node: Comment
    cursor: str


class Comments(BaseModel):
    edges: List[CommentsEdge]


class CommentsDiscussion(BaseModel):
    comments: Comments


class CommentsRepository(BaseModel):

## Testing locally with Traefik

You can easily run the experiment locally with a stripped path prefix using <a href="https://docs.traefik.io/" class="external-link" target="_blank">Traefik</a>.

<a href="https://github.com/containous/traefik/releases" class="external-link" target="_blank">Download Traefik</a>, it's a single binary, you can extract the compressed file and run it directly from the terminal.

* <a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank"><strong>Swagger UI</strong></a>, với giao diện khám phá, gọi và kiểm thử API trực tiếp từ trình duyệt.

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Thay thế với tài liệu API với <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.

@AndroidIncompatible // custom classloading

public class AbstractFutureCancellationCauseTest extends TestCase {

  private ClassLoader oldClassLoader;
  private URLClassLoader classReloader;
  private Class<?> settableFutureClass;
  private Class<?> abstractFutureClass;

  @Override
  protected void setUp() throws Exception {

@AndroidIncompatible // custom classloading

public class AbstractFutureCancellationCauseTest extends TestCase {

  private ClassLoader oldClassLoader;
  private URLClassLoader classReloader;
  private Class<?> settableFutureClass;
  private Class<?> abstractFutureClass;

  @Override
  protected void setUp() throws Exception {

public abstract class okhttp3/mockwebserver/Dispatcher {
	public fun <init> ()V
	public abstract fun dispatch (Lokhttp3/mockwebserver/RecordedRequest;)Lokhttp3/mockwebserver/MockResponse;
	public fun peek ()Lokhttp3/mockwebserver/MockResponse;
	public fun shutdown ()V
}

public final class okhttp3/mockwebserver/MockResponse : java/lang/Cloneable {
	public static final field Companion Lokhttp3/mockwebserver/MockResponse$Companion;

                ASN1Sequence encSequence = ASN1Util.as(ASN1Sequence.class, tagged);
                ASN1Integer encType = ASN1Util.as(ASN1Integer.class, ASN1Util.as(ASN1TaggedObject.class, encSequence, 0));
                DEROctetString encOctets = ASN1Util.as(DEROctetString.class, ASN1Util.as(ASN1TaggedObject.class, encSequence, 2));
                byte[] crypt = encOctets.getOctets();

                if ( keys == null ) {
                    try {

        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is(sameClass(Number.class)));

        assertThat(it.hasNext(), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test(expected = ClIllegalArgumentException.class)
    public void testInterface() throws Exception {
        new ClassIterator(Iterable.class);
    }