* In code blocks within the Markdown document, translate comments (`# a comment`), but leave the rest unchanged.

* Do not change anything enclosed in "``" (inline code).

* In lines starting with `===` or `!!!`, translate only the ` "... Text ..."` part. Leave the rest unchanged.

    Hug inspired **FastAPI** to declare a `response` parameter in functions to set headers and cookies.

### <a href="https://github.com/encode/apistar" class="external-link" target="_blank">APIStar</a> (<= 0.5)

Right before deciding to build **FastAPI** I found **APIStar** server. It had almost everything I was looking for and had a great design.

    🤗 😮 🍕 APIStar, & 1️⃣ 🧰 👤 🔎 🏆 👍, 🌟 APIStar.

    🤗 ℹ 😍 **FastAPI** ⚙️ 🐍 🆎 🔑 📣 🔢, & 🏗 🔗 ⚖ 🛠️ 🔁.

    🤗 😮 **FastAPI** 📣 `response` 🔢 🔢 ⚒ 🎚 & 🍪.

### <a href="https://github.com/encode/apistar" class="external-link" target="_blank">APIStar</a> (&lt;= 0️⃣.5️⃣)

▶️️ ⏭ 🤔 🏗 **FastAPI** 👤 🔎 **APIStar** 💽. ⚫️ ✔️ 🌖 🌐 👤 👀 &amp; ✔️ 👑 🔧.

You can also use <a href="https://github.com/encode/databases" class="external-link" target="_blank">`encode/databases`</a> with **FastAPI** to connect to databases using `async` and `await`.

It is compatible with:

* PostgreSQL
* MySQL
* SQLite

In this example, we'll use **SQLite**, because it uses a single file and Python has integrated support. So, you can copy this example and run it as is.

from typing import List, Union

from fastapi import FastAPI
from fastapi.encoders import jsonable_encoder
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: Union[str, None] = None
    description: Union[str, None] = None
    price: Union[float, None] = None
    tax: float = 10.5
    tags: List[str] = []


items = {
    "foo": {"name": "Foo", "price": 50.2},

## Convert any Data to JSON-compatible

To convert any data to JSON-compatible, read the docs for [Tutorial - JSON Compatible Encoder](../tutorial/encoder.md){.internal-link target=_blank}.

## OpenAPI Metadata - Docs

    * In `encoders.jsonable_encoder`:
        * Remove deprecated `skip_defaults`, use instead `exclude_unset`.
        * Set default of `exclude` from `set()` to `None` (as is in Pydantic).
    * PR [#1862](https://github.com/tiangolo/fastapi/pull/1862).
* In `encoders.jsonable_encoder` remove parameter `sqlalchemy_safe`.

在文档界面中显示弃用的**路径操作**，请阅读 [教程 - 路径操作配置 - 弃用](../tutorial/path-operation-configuration.md#deprecate-a-path-operation){.internal-link target=_blank} 文档。

## 将任何数据转换为 JSON 兼容格式

要将任何数据转换为 JSON 兼容格式，请阅读 [教程 - JSON 兼容编码器](../tutorial/encoder.md){.internal-link target=_blank} 文档。

## OpenAPI 元数据 - 文档

要添加 OpenAPI 的元数据，包括许可证、版本、联系方式等，请阅读 [教程 - 元数据和文档 URL](../tutorial/metadata.md){.internal-link target=_blank} 文档。

## OpenAPI 自定义 URL

    Wenn Sie etwas benötigen, das sich leicht in FastAPI integrieren lässt, aber robuster ist und von Redis, PostgreSQL und anderen unterstützt wird, sehen Sie sich <a href="https://github.com/encode/broadcaster" class="external-link" target="_blank">encode/broadcaster</a> an.

## Mehr Informationen

Weitere Informationen zu Optionen finden Sie in der Dokumentation von Starlette:

Mit **FastAPI** bekommen Sie alles von **Starlette** (da FastAPI nur Starlette auf Steroiden ist):

* Schwer beeindruckende Performanz. Es ist <a href="https://github.com/encode/starlette#performance" class="external-link" target="_blank">eines der schnellsten Python-Frameworks, auf Augenhöhe mit **NodeJS** und **Go**</a>.
* **WebSocket**-Unterstützung.
* Hintergrundaufgaben im selben Prozess.