from fastapi import FastAPI

app = FastAPI()


@app.get("/app")
def read_main():
    return {"message": "Hello World from main app"}


subapi = FastAPI()


@subapi.get("/sub")
def read_sub():
    return {"message": "Hello World from sub API"}

from typing import List

from fastapi import FastAPI, File, UploadFile
from fastapi.responses import HTMLResponse
from typing_extensions import Annotated

app = FastAPI()


@app.post("/files/")
async def create_files(files: Annotated[List[bytes], File()]):
    return {"file_sizes": [len(file) for file in files]}


@app.post("/uploadfiles/")
async def create_upload_files(files: List[UploadFile]):

from fastapi import Body, FastAPI
from pydantic import BaseModel

app = FastAPI()


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


@app.put("/items/{item_id}")
async def update_item(
    *,
    item_id: int,
    item: Item = Body(
        openapi_examples={
            "normal": {
                "summary": "A normal example",

from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/")
async def read_main():
    return {"msg": "Hello World"}


client = TestClient(app)


def test_read_main():
    response = client.get("/")
    assert response.status_code == 200

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}

# Recursos

## Recursos do FastAPI

**FastAPI** te oferece o seguinte:

### Baseado em padrões abertos

Використання його у своєму редакторі – це те, що дійсно показує вам переваги FastAPI, бачите, як мало коду вам потрібно написати, всі перевірки типів, автозаповнення тощо.

---

## Встановлення FastAPI

Першим кроком є встановлення FastAPI.

Для туторіалу ви можете встановити його з усіма необов’язковими залежностями та функціями:

<div class="termy">

```console
$ pip install "fastapi[all]"

---> 100%
```

</div>

from typing import Any, Dict, List, Union

from fastapi import FastAPI, UploadFile
from fastapi._compat import (
    ModelField,
    Undefined,
    _get_model_config,
    get_cached_model_fields,
    get_model_fields,
    is_bytes_sequence_annotation,
    is_scalar_field,
    is_uploadfile_sequence_annotation,
)
from fastapi.testclient import TestClient
from pydantic import BaseConfig, BaseModel, ConfigDict

import io
from pathlib import Path
from typing import List

import pytest
from fastapi import FastAPI, UploadFile
from fastapi.datastructures import Default
from fastapi.testclient import TestClient


# TODO: remove when deprecating Pydantic v1
def test_upload_file_invalid():
    with pytest.raises(ValueError):
        UploadFile.validate("not a Starlette UploadFile")


def test_upload_file_invalid_pydantic_v2():

from typing import Any

from fastapi import FastAPI
from fastapi.testclient import TestClient
from pydantic import BaseModel, ConfigDict

from .utils import needs_pydanticv1, needs_pydanticv2


@needs_pydanticv2
def test_read_with_orm_mode() -> None:
    class PersonBase(BaseModel):
        name: str
        lastname: str

    class Person(PersonBase):
        @property
        def full_name(self) -> str: