from typing import Callable

from fastapi import Body, FastAPI, HTTPException, Request, Response
from fastapi.exceptions import RequestValidationError
from fastapi.routing import APIRoute


class ValidationErrorLoggingRoute(APIRoute):
    def get_route_handler(self) -> Callable:
        original_route_handler = super().get_route_handler()

        async def custom_route_handler(request: Request) -> Response:
            try:

<a href="https://pypi.org/project/fastapi" target="_blank">
    <img src="https://img.shields.io/pypi/pyversions/fastapi.svg?color=%2334D058" alt="Supported Python versions">
</a>
</p>

---

**文档**： <a href="https://fastapi.tiangolo.com" target="_blank">https://fastapi.tiangolo.com</a>

**源码**： <a href="https://github.com/fastapi/fastapi" target="_blank">https://github.com/fastapi/fastapi</a>

---

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

router = APIRouter()

sub_router = APIRouter()

app = FastAPI()


@sub_router.get("/")
def read_item():
    return {"id": "foo"}


router.include_router(sub_router, prefix="/items")

app.include_router(router)

client = TestClient(app)


def test_path_operation():
    response = client.get("/items/")

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

app = FastAPI(openapi_prefix="/api/v1")


@app.get("/app")
def read_main(request: Request):
    return {"message": "Hello World", "root_path": request.scope.get("root_path")}


client = TestClient(app)


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

And to create `fluffy`, you are "calling" `Cat`.

So, a Python class is also a **callable**.

Then, in **FastAPI**, you could use a Python class as a dependency.

What FastAPI actually checks is that it is a "callable" (function, class or anything else) and the parameters defined.

Então, uma classe Python também é "chamável".

Então, no **FastAPI**, você pode utilizar uma classe Python como uma dependência.

O que o FastAPI realmente verifica, é se a dependência é algo chamável (função, classe, ou outra coisa) e os parâmetros que foram definidos.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-02-redoc-simple.png)

## Собрать Docker-образ для однофайлового FastAPI { #build-a-docker-image-with-a-single-file-fastapi }

Если ваше приложение FastAPI — один файл, например `main.py` без директории `./app`, структура файлов может быть такой:

```
.
├── Dockerfile

También podrías usar `from starlette.testclient import TestClient`.

**FastAPI** proporciona el mismo `starlette.testclient` como `fastapi.testclient` solo por conveniencia para ti, el desarrollador. Pero proviene directamente de Starlette.

///

/// tip | Consejo

Также можно написать `from starlette.testclient import TestClient`.

**FastAPI** предоставляет тот же самый `starlette.testclient` как `fastapi.testclient`. Это всего лишь небольшое удобство для Вас, как разработчика. Но он берётся напрямую из Starlette.

///

/// tip | Подсказка

        run: |
          cd dist
          tar xvf fastapi*.tar.gz
      - name: Install test dependencies
        run: |
          cd dist/fastapi*/
          pip install -r requirements-tests.txt
        env:
          TIANGOLO_BUILD_PACKAGE: ${{ matrix.package }}
      - name: Run source distribution tests
        run: |
          cd dist/fastapi*/
          bash scripts/test.sh
      - name: Build wheel distribution