from fastapi import Depends, FastAPI, HTTPException
from typing_extensions import Annotated

app = FastAPI()


data = {
    "plumbus": {"description": "Freshly pickled plumbus", "owner": "Morty"},
    "portal-gun": {"description": "Gun to create portals", "owner": "Rick"},
}


class OwnerError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except OwnerError as e:

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float = 10.5


items = {
    "foo": {"name": "Foo", "price": 50.2},
    "bar": {"name": "Bar", "description": "The Bar fighters", "price": 62, "tax": 20.2},
    "baz": {
        "name": "Baz",
        "description": "There goes my baz",

# Aprender

Nesta parte da documentação encontramos as seções introdutórias e os tutoriais para aprendermos como usar o **FastAPI**.

, 🔃 🥚 & 🐔, ❔ 👆 🤙 🥇 `async` 🔢 ❓

🚥 👆 👷 ⏮️ **FastAPI** 👆 🚫 ✔️ 😟 🔃 👈, ↩️ 👈 "🥇" 🔢 🔜 👆 *➡ 🛠️ 🔢*, & FastAPI 🔜 💭 ❔ ▶️️ 👜.

✋️ 🚥 👆 💚 ⚙️ `async` / `await` 🍵 FastAPI, 👆 💪 ⚫️ 👍.

### ✍ 👆 👍 🔁 📟

```Python hl_lines="2  6-38  41-43"
{!../../docs_src/websockets/tutorial001.py!}
```

## `websocket` を作成する

**FastAPI** アプリケーションで、`websocket` を作成します。

```Python hl_lines="1  46-47"
{!../../docs_src/websockets/tutorial001.py!}
```

/// note | "技術詳細"

`from starlette.websockets import WebSocket` を使用しても構いません.

**FastAPI** は開発者の利便性のために、同じ `WebSocket` を提供します。しかし、こちらはStarletteから直接提供されるものです。

///

## メッセージの送受信

from typing import Set, Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


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


@app.post(
    "/items/",
    response_model=Item,
    summary="Create an item",
    response_description="The created item",
)

from fastapi.testclient import TestClient

from docs_src.custom_response.tutorial006b import app

client = TestClient(app)


def test_redirect_response_class():
    response = client.get("/fastapi", follow_redirects=False)
    assert response.status_code == 307
    assert response.headers["location"] == "https://fastapi.tiangolo.com"


def test_openapi_schema():
    response = client.get("/openapi.json")

## Adım Adım Özetleyelim

### Adım 1: `FastAPI`yı Projemize Dahil Edelim

```Python hl_lines="1"
{!../../docs_src/first_steps/tutorial001.py!}
```

`FastAPI`, API'niz için tüm işlevselliği sağlayan bir Python sınıfıdır.

/// note | "Teknik Detaylar"

`FastAPI` doğrudan `Starlette`'i miras alan bir sınıftır.

from fastapi.testclient import TestClient

from docs_src.custom_response.tutorial001b import app

client = TestClient(app)


def test_get_custom_response():
    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [{"item_id": "Foo"}]


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text

from fastapi.testclient import TestClient

from docs_src.custom_response.tutorial005 import app

client = TestClient(app)


def test_get():
    response = client.get("/")
    assert response.status_code == 200, response.text
    assert response.text == "Hello World"


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {