from typing import Union

from fastapi import Body, Cookie, FastAPI, Header, Path, Query
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    data: str


@app.post("/examples/")
def examples(
    item: Item = Body(
        examples=[
            {"data": "Data in Body examples, example1"},
        ],
        openapi_examples={
            "Example One": {

from typing import Optional

from fastapi import FastAPI
from fastapi.responses import JSONResponse
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: Optional[float] = None


@app.api_route("/items/{item_id}", methods=["GET"])
def get_items(item_id: str):
    return {"item_id": item_id}


def get_not_decorated(item_id: str):

from typing import Optional

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

app = FastAPI()


user_router = APIRouter()
item_router = APIRouter()


@user_router.get("/")
def get_users():
    return [{"user_id": "u1"}, {"user_id": "u2"}]


@user_router.get("/{user_id}")
def get_user(user_id: str):
    return {"user_id": user_id}


@item_router.get("/")

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80"]
```

## Créer le code **FastAPI**.

* Créer un répertoire `app` et y entrer.
* Créez un fichier `main.py` avec :

```Python
from typing import Optional

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")

import logging
import random
import sys
import time
from pathlib import Path
from typing import Any, Union, cast

import httpx
from github import Github
from pydantic import BaseModel, SecretStr
from pydantic_settings import BaseSettings

awaiting_label = "awaiting-review"
lang_all_label = "lang-all"
approved_label = "approved-1"


github_graphql_url = "https://api.github.com/graphql"

from typing import Annotated

import pytest
from dirty_equals import IsOneOf
from fastapi import FastAPI, Query
from fastapi.testclient import TestClient
from pydantic import BaseModel, Field

app = FastAPI()

# =====================================================================================
# Without aliases


@app.get("/required-list-str")
async def read_required_list_str(p: Annotated[list[str], Query()]):
    return {"p": p}

### 타입 매개변수를 활용한 Generic(제네릭) 타입

`dict`, `list`, `set`, `tuple`과 같은 값을 저장할 수 있는 데이터 구조가 있고, 내부의 값은 각자의 타입을 가질 수도 있습니다.

타입과 내부 타입을 선언하기 위해서는 파이썬 표준 모듈인 `typing`을 이용해야 합니다.

구체적으로는 아래 타입 힌트를 지원합니다.

#### `List`

예를 들면, `str`의 `list`인 변수를 정의해봅시다.

`typing`에서  `List`(대문자 `L`)를 import 합니다.

{* ../../docs_src/python_types/tutorial006.py hl[1] *}


콜론(`:`) 문법을 이용하여 변수를 선언합니다.

타입으로는 `List`를 넣어줍니다.

from typing import Annotated, Optional

import pytest
from fastapi import FastAPI, Query
from fastapi.testclient import TestClient
from pydantic import BaseModel, Field

app = FastAPI()

# =====================================================================================
# Without aliases


@app.get("/optional-str")
async def read_optional_str(p: Optional[str] = None):
    return {"p": p}

<div class="termy">

```console
$ pip install "uvicorn[standard]"

---> 100%
```

</div>

## Exemple

### Créez

* Créez un fichier `main.py` avec :

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")

## Ejemplo { #example }

### Créalo { #create-it }

Crea un archivo `main.py` con:

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")