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///

## Ohne Pydantic

Pydantic 模型的 JSON 概图是 OpenAPI 生成的概图部件，可在 API 文档中显示：

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

而且，还会用于 API 文档中使用了概图的*路径操作*：

<img src="/img/tutorial/body/image02.png">

## 编辑器支持

在编辑器中，函数内部均可使用类型提示、代码补全（如果接收的不是 Pydantic 模型，而是**字典**，就没有这样的支持）：

<img src="/img/tutorial/body/image03.png">

还支持检查错误的类型操作：

<img src="/img/tutorial/body/image04.png">

这并非偶然，整个 **FastAPI** 框架都是围绕这种思路精心设计的。

///

## Sem o Pydantic

# Request Body

When you need to send data from a client (let's say, a browser) to your API, you send it as a **request body**.

A **request** body is data sent by the client to your API. A **response** body is the data your API sends to the client.

Your API almost always has to send a **response** body. But clients don't necessarily need to send **request bodies** all the time, sometimes they only request a path, maybe with some query parameters, but don't send a body.