from datetime import datetime
from typing import Union

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

fake_db = {}


class Item(BaseModel):
    title: str
    timestamp: datetime
    description: Union[str, None] = None


app = FastAPI()


@app.put("/items/{id}")
def update_item(id: str, item: Item):
    json_compatible_item_data = jsonable_encoder(item)

---> 100%
Successfully installed fastapi pydantic uvicorn
```

</div>

/// info

📤 🎏 📁 &amp; 🧰 🔬 &amp; ❎ 📦 🔗.

👤 🔜 🎦 👆 🖼 ⚙️ 🎶 ⏪ 📄 🔛. 👶

///

### ✍ **FastAPI** 📟

* ✍ `app` 📁 &amp; ⛔ ⚫️.
* ✍ 🛁 📁 `__init__.py`.
* ✍ `main.py` 📁 ⏮️:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()

import secrets

from fastapi import Depends, FastAPI, HTTPException, status
from fastapi.security import HTTPBasic, HTTPBasicCredentials
from typing_extensions import Annotated

app = FastAPI()

security = HTTPBasic()


def get_current_username(
    credentials: Annotated[HTTPBasicCredentials, Depends(security)],
):
    current_username_bytes = credentials.username.encode("utf8")
    correct_username_bytes = b"stanleyjobson"

from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI(swagger_ui_oauth2_redirect_url=None)


@app.get("/items/")
async def read_items():
    return {"id": "foo"}


client = TestClient(app)


def test_swagger_ui():
    response = client.get("/docs")
    assert response.status_code == 200, response.text
    assert response.headers["content-type"] == "text/html; charset=utf-8"

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

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

### FastAPI 💽 🖥

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

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

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

Użycie w Twoim edytorze jest tym, co pokazuje prawdziwe korzyści z FastAPI, pozwala zobaczyć jak mało kodu musisz napisać, wszystkie funkcje, takie jak kontrola typów, <abbr title="auto-complete, autocompletion, IntelliSense">automatyczne uzupełnianie</abbr>, itd.

---

## Instalacja FastAPI

Jako pierwszy krok zainstaluj FastAPI.

Na potrzeby samouczka możesz zainstalować również wszystkie opcjonalne biblioteki:

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

app = FastAPI()


async def response_status_setter(response: Response):
    response.status_code = 201


async def parent_dep(result=Depends(response_status_setter)):
    return result


@app.get("/", dependencies=[Depends(parent_dep)])
async def get_main():
    return {"msg": "Hello World"}


client = TestClient(app)

/// tip

🛠️ 🎏 🤝/✔ 🐕‍🦺 💖 🇺🇸🔍, 👱📔, 👱📔, 📂, ♒️. 💪 & 📶 ⏩.

🌅 🏗 ⚠ 🏗 🤝/✔ 🐕‍🦺 💖 👈, ✋️ **FastAPI** 🤝 👆 🧰 ⚫️ 💪, ⏪ 🔨 🏋️ 🏋‍♂ 👆.

///

## **FastAPI** 🚙

FastAPI 🚚 📚 🧰 🔠 👉 💂‍♂ ⚖ `fastapi.security` 🕹 👈 📉 ⚙️ 👉 💂‍♂ 🛠️.

⏭ 📃 👆 🔜 👀 ❔ 🚮 💂‍♂ 👆 🛠️ ⚙️ 📚 🧰 🚚 **FastAPI**.

Например, расширяя предыдущую модель, вы можете решить, что вам нужен еще один ключ `importance` в том же теле запроса, помимо параметров `item` и `user`.

Если вы объявите его без указания, какой именно объект (Path, Query, Body и .т.п.) ожидаете, то, поскольку это является простым типом данных, **FastAPI** будет считать, что это query-параметр.

from fastapi import FastAPI, Form
from fastapi.testclient import TestClient

app = FastAPI()


@app.post("/form/python-list")
def post_form_param_list(items: list = Form()):
    return items


@app.post("/form/python-set")
def post_form_param_set(items: set = Form()):
    return items


@app.post("/form/python-tuple")
def post_form_param_tuple(items: tuple = Form()):
    return items


client = TestClient(app)