/// info

The <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a> package is automatically installed with **FastAPI** when you run the `pip install "fastapi[standard]"` command.

However, if you use the `pip install fastapi` command, the `python-multipart` package is not included by default.

  <a href="https://fastapi.tiangolo.com"><img src="https://fastapi.tiangolo.com/img/logo-margin/logo-teal.png" alt="FastAPI"></a>
</p>
<p align="center">
    FastAPI framework, alte prestazioni, facile da imparare, rapido da implementare, pronto per il rilascio in produzione
</p>
<p align="center">
<a href="https://travis-ci.com/fastapi/fastapi" target="_blank">

⚙️ 👫 🎀 🔢 ⏮️ 👁 `yield`.

👈 ⚫️❔ **FastAPI** ⚙️ 🔘 🔗 ⏮️ `yield`.

✋️ 👆 🚫 ✔️ ⚙️ 👨‍🎨 FastAPI 🔗 (& 👆 🚫🔜 🚫).

FastAPI 🔜 ⚫️ 👆 🔘.

      <a class="announce-link" href="https://twitter.com/fastapi" target="_blank">
        <span class="twemoji twitter">
          {% include ".icons/fontawesome/brands/twitter.svg" %}
        </span> Follow <strong>@fastapi</strong> on <strong>Twitter</strong> to stay updated
      </a>
    </div>
    <div class="item">
      <a class="announce-link" href="https://fastapi.tiangolo.com/newsletter/">
        <span class="twemoji">

6. 这行代码返回的是包含 `items` 的字典，`items` 是数据类列表；

    FastAPI 仍能把数据<abbr title="把数据转换为可以传输的格式">序列化</abbr>为 JSON；

7. 这行代码中，`response_model` 的类型注解是 `Author` 数据类列表；

    再一次，可以把 `dataclasses` 与标准类型注解一起使用；

8. 注意，*路径操作函数*使用的是普通函数，不是异步函数；

    与往常一样，在 FastAPI 中，可以按需组合普通函数与异步函数；

from fastapi import Depends, FastAPI, Response
from fastapi.testclient import TestClient

app = FastAPI()


def set_cookie(*, response: Response):
    response.set_cookie("cookie-name", "cookie-value")
    return {}


def set_indirect_cookie(*, dep: str = Depends(set_cookie)):
    return dep


@app.get("/directCookie")
def get_direct_cookie(dep: str = Depends(set_cookie)):
    return {"dep": dep}

# Implantar FastAPI em provedores de nuvem

Você pode usar praticamente **qualquer provedor de nuvem** para implantar seu aplicativo FastAPI.

Na maioria dos casos, os principais provedores de nuvem têm guias para implantar o FastAPI com eles.

## Provedores de Nuvem - Patrocinadores

from typing import TypeVar

from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient
from typing_extensions import Annotated

app = FastAPI()

T = TypeVar("T")

Dep = Annotated[T, Depends()]


class A:
    pass


class B:
    pass


@app.get("/a")
async def a(dep: Dep[A]):
    return {"cls": dep.__class__.__name__}


@app.get("/b")
async def b(dep: Dep[B]):

from dirty_equals import IsOneOf
from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI(
    servers=[
        {"url": "/", "description": "Default, relative server"},
        {
            "url": "http://staging.localhost.tiangolo.com:8000",
            "description": "Staging but actually localhost still",
        },
        {"url": "https://prod.example.com"},
    ]
)


@app.get("/foo")
def foo():

👥 ✍ 🔢 📨 🆎 `BaseUser`, ✋️ 👥 🤙 🛬 `UserIn` 👐.

👨‍🎨, ✍, & 🎏 🧰 🏆 🚫 😭 🔃 👉 ↩️, ⌨ ⚖, `UserIn` 🏿 `BaseUser`, ❔ ⛓ ⚫️ *☑* 🆎 🕐❔ ⚫️❔ ⌛ 🕳 👈 `BaseUser`.

### FastAPI 💽 🖥

🔜, FastAPI, ⚫️ 🔜 👀 📨 🆎 & ⚒ 💭 👈 ⚫️❔ 👆 📨 🔌 **🕴** 🏑 👈 📣 🆎.

FastAPI 🔨 📚 👜 🔘 ⏮️ Pydantic ⚒ 💭 👈 📚 🎏 🚫 🎓 🧬 🚫 ⚙️ 📨 💽 🖥, ⏪ 👆 💪 🔚 🆙 🛬 🌅 🌅 💽 🌘 ⚫️❔ 👆 📈.

👉 🌌, 👆 💪 🤚 🏆 👯‍♂️ 🌏: 🆎 ✍ ⏮️ **🏭 🐕‍🦺** & **💽 🖥**.