#### Использование локального FastAPI

Если Вы создаёте Python файл, который импортирует и использует FastAPI,а затем запускаете его интерпретатором Python из Вашего локального окружения, то он будет использовать код из локального FastAPI.

from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


@app.put("/items/{item_id}")
def save_item_no_body(item_id: str):
    return {"item_id": item_id}


client = TestClient(app)


def test_put_no_body():
    response = client.put("/items/foo")
    assert response.status_code == 200, response.text
    assert response.json() == {"item_id": "foo"}


def test_put_no_body_with_body():

from datetime import datetime

from fastapi import FastAPI, Security
from fastapi.security import HTTPBearer
from fastapi.testclient import TestClient
from pydantic import BaseModel
from typing_extensions import Annotated

app = FastAPI()

bearer_scheme = HTTPBearer()


class Subscription(BaseModel):
    username: str
    monthly_fee: float
    start_date: datetime


@app.webhooks.post("new-subscription")

# Merkmale

## FastAPI Merkmale

**FastAPI** ermöglicht Ihnen Folgendes:

### Basiert auf offenen Standards

## Starlette features

**FastAPI** is fully compatible with (and based on) <a href="https://www.starlette.io/" class="external-link" target="_blank"><strong>Starlette</strong></a>. So, any additional Starlette code you have, will also work.

`FastAPI` is actually a sub-class of `Starlette`. So, if you already know or use Starlette, most of the functionality will work the same way.

# Cechy

## Cechy FastAPI

**FastAPI** zapewnia Ci następujące korzyści:

### Oparcie o standardy open

**FastAPI** has its own `HTTPException`.

And **FastAPI**'s `HTTPException` error class inherits from Starlette's `HTTPException` error class.

The only difference is that **FastAPI**'s `HTTPException` accepts any JSON-able data for the `detail` field, while Starlette's `HTTPException` only accepts strings for it.

So, you can keep raising **FastAPI**'s `HTTPException` as normally in your code.

# Entwicklung – Mitwirken

Vielleicht möchten Sie sich zuerst die grundlegenden Möglichkeiten anschauen, [FastAPI zu helfen und Hilfe zu erhalten](help-fastapi.md){.internal-link target=_blank}.

## Entwicklung

Wenn Sie das <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">fastapi Repository</a> bereits geklont haben und tief in den Code eintauchen möchten, hier einen Leitfaden zum Einrichten Ihrer Umgebung.

from fastapi import FastAPI
from fastapi._compat import PYDANTIC_V2
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str

    if PYDANTIC_V2:
        model_config = {
            "json_schema_extra": {
                "x-something-internal": {"level": 4},
            }
        }
    else:

        class Config:
            schema_extra = {

from fastapi import FastAPI
from fastapi.testclient import TestClient

from .utils import needs_py310


@needs_py310
def test_typing():
    types = {
        list[int]: [1, 2, 3],
        dict[str, list[int]]: {"a": [1, 2, 3], "b": [4, 5, 6]},
        set[int]: [1, 2, 3],  # `set` is converted to `list`
        tuple[int, ...]: [1, 2, 3],  # `tuple` is converted to `list`
    }
    for test_type, expect in types.items():