import com.google.common.base.Preconditions;
import java.io.IOException;
import java.io.Reader;
import java.util.Iterator;
import javax.annotation.CheckForNull;

/**
 * A {@link Reader} that concatenates multiple readers.
 *
 * @author Bin Zhu
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
class MultiReader extends Reader {

{!../../docs_src/app_testing/tutorial002.py!}
```

/// note | "Hinweis"

Weitere Informationen finden Sie in der Starlette-Dokumentation zum <a href="https://www.starlette.io/testclient/#testing-websocket-sessions" class="external-link" target="_blank">Testen von WebSockets</a>.

# Corpo - Atualizações

## Atualização de dados existentes com `PUT`

Para atualizar um item, você pode usar a operação <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PUT" class="external-link" target="_blank">HTTP `PUT`</a>.

Você pode usar `jsonable_encoder` para converter os dados de entrada em dados que podem ser armazenados como JSON (por exemplo, com um banco de dados NoSQL). Por exemplo, convertendo `datetime` em `str`.

# Body - Updates

## Update replacing with `PUT`

To update an item you can use the <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PUT" class="external-link" target="_blank">HTTP `PUT`</a> operation.

You can use the `jsonable_encoder` to convert the input data to data that can be stored as JSON (e.g. with a NoSQL database). For example, converting `datetime` to `str`.

//// tab | Python 3.10+

```Python hl_lines="28-33"

你可以用作 TLS 终止代理的一些选项包括：

* Traefik（也可以处理证书更新）
* Caddy（也可以处理证书更新）
* Nginx
* HAProxy

## Let's Encrypt

在 Let's Encrypt 之前，这些 **HTTPS 证书** 由受信任的第三方出售。

过去，获得这些证书的过程非常繁琐，需要大量的文书工作，而且证书非常昂贵。

但随后 **<a href="https://letsencrypt.org/" class="external-link" target="_blank">Let's Encrypt</a>** 创建了。

///

/// info | "Информация"

Вы также можете использовать:

* `response_model_exclude_defaults=True`
* `response_model_exclude_none=True`

pkg go/doc/comment, type Heading struct, Text []Text #51082
pkg go/doc/comment, type Italic string #51082
pkg go/doc/comment, type Link struct #51082
pkg go/doc/comment, type Link struct, Auto bool #51082
pkg go/doc/comment, type Link struct, Text []Text #51082
pkg go/doc/comment, type Link struct, URL string #51082
pkg go/doc/comment, type LinkDef struct #51082
pkg go/doc/comment, type LinkDef struct, Text string #51082

   * keys. If so, the return value will indicate how many entries are still valid, and will also
   * include a {@link Builder.DuplicateKey} in case duplicate keys are not allowed now or will not
   * be allowed on a later {@link Builder#buildOrThrow()} call.
   *
   * @param keyOffset 1 if this is the reverse direction of a BiMap, 0 otherwise.

👆 💪 ✍ <a href="https://en.wikipedia.org/wiki/Markdown" class="external-link" target="_blank">✍</a> #️⃣ , ⚫️ 🔜 🔬 &amp; 🖥 ☑ (✊ 🔘 🏧 #️⃣ 📐).

//// tab | 🐍 3️⃣.6️⃣ &amp; 🔛

```Python hl_lines="19-27"
{!> ../../docs_src/path_operation_configuration/tutorial004.py!}
```

////

```

////

👉 💼, 📤 3️⃣ 🔢 🔢:

* `needy`, ✔ `str`.
* `skip`, `int` ⏮️ 🔢 💲 `0`.
* `limit`, 📦 `int`.

/// tip

👆 💪 ⚙️ `Enum`Ⓜ 🎏 🌌 ⏮️ [➡ 🔢](path-params.md#_7){.internal-link target=_blank}.