from collections.abc import Callable
from typing import Annotated

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:

import pytest
from fastapi import APIRouter, FastAPI
from fastapi.exceptions import FastAPIError
from fastapi.testclient import TestClient

app = FastAPI()

router = APIRouter()


@router.get("")
def get_empty():
    return ["OK"]


app.include_router(router, prefix="/prefix")


client = TestClient(app)


def test_use_empty():
    with client:
        response = client.get("/prefix")

    assert "Path does not exist non_existent_file.py" in result.stdout


def test_fastapi_cli_not_installed():
    with patch.object(fastapi.cli, "cli_main", None):
        with pytest.raises(RuntimeError) as exc_info:
            fastapi.cli.main()

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


def test_redirect_slashes_enabled():
    app = FastAPI()
    router = APIRouter()

    @router.get("/hello/")
    def hello_page() -> str:
        return "Hello, World!"

    app.include_router(router)

    client = TestClient(app)

    response = client.get("/hello/", follow_redirects=False)
    assert response.status_code == 200

Dependencies are handled mainly with the special function `Depends()` that takes a callable.

Here is the reference for it and its parameters.

You can import it directly from `fastapi`:

```python
from fastapi import Depends
```

::: fastapi.Depends

## `Security()`

For many scenarios, you can handle security (authorization, authentication, etc.) with dependencies, using `Depends()`.

Considero a **FastAPI** un "sucesor espiritual" de APIStar, mientras mejora y aumenta las funcionalidades, el sistema de tipos y otras partes, basándose en los aprendizajes de todas estas herramientas previas.

///

## Usado por **FastAPI** { #used-by-fastapi }

Eu considero o **FastAPI** um "sucessor espiritual" do APIStar, enquanto aprimora e amplia as funcionalidades, o sistema de tipagem e outras partes, baseado nos aprendizados de todas essas ferramentas anteriores.

///

## Usados por **FastAPI** { #used-by-fastapi }

# FastAPI全栈模板

模板通常带有特定的设置，而且被设计为灵活和可定制的。这允许您根据项目的需求修改和调整它们，使它们成为一个很好的起点。🏁

您可以使用此模板开始，因为它包含了许多已经为您完成的初始设置、安全性、数据库和一些API端点。

代码仓： <a href="https://github.com/fastapi/full-stack-fastapi-template" class="external-link" target="_blank">Full Stack FastAPI Template</a>

## FastAPI全栈模板 - 技术栈和特性

- ⚡ [**FastAPI**](https://fastapi.tiangolo.com) 用于Python后端API.
    - 🧰 [SQLModel](https://sqlmodel.tiangolo.com) 用于Python和SQL数据库的集成（ORM）。

import pytest
from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/a", responses={"hello": {"description": "Not a valid additional response"}})
async def a():
    pass  # pragma: no cover


openapi_schema = {
    "openapi": "3.1.0",
    "info": {"title": "FastAPI", "version": "0.1.0"},
    "paths": {
        "/a": {
            "get": {
                "responses": {

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Альтернативна документація API за допомогою <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

### Тільки сучасний Python