from fastapi import FastAPI
from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/", openapi_extra={"x-custom-extension": "value"})
def route_with_extras():
    return {}


client = TestClient(app)


def test_get_route():
    response = client.get("/")
    assert response.status_code == 200, response.text
    assert response.json() == {}


def test_openapi():

from typing import Annotated

from fastapi import BackgroundTasks, Depends, FastAPI

app = FastAPI()


def write_log(message: str):
    with open("log.txt", mode="a") as log:
        log.write(message)


def get_query(background_tasks: BackgroundTasks, q: str | None = None):
    if q:
        message = f"found query: {q}\n"
        background_tasks.add_task(write_log, message)
    return q

from typing import Union

from fastapi import BackgroundTasks, Depends, FastAPI

app = FastAPI()


def write_log(message: str):
    with open("log.txt", mode="a") as log:
        log.write(message)


def get_query(background_tasks: BackgroundTasks, q: Union[str, None] = None):
    if q:
        message = f"found query: {q}\n"
        background_tasks.add_task(write_log, message)
    return q

from fastapi import FastAPI
from fastapi.openapi.utils import get_openapi

app = FastAPI()


@app.get("/items/")
async def read_items():
    return [{"name": "Foo"}]


def custom_openapi():
    if app.openapi_schema:
        return app.openapi_schema
    openapi_schema = get_openapi(
        title="Custom title",
        version="2.5.0",
        summary="This is a very custom OpenAPI schema",

So, you would be able to, for example, share the same data from a Django application in a database with a FastAPI application. Or gradually migrate a Django application using the same database.

And your users would be able to login from your Django app or from your **FastAPI** app, at the same time.

///

## Hash and verify the passwords { #hash-and-verify-the-passwords }

Import the tools we need from `pwdlib`.

<div class="termy">

```console
$ uv pip install "fastapi[standard]"
---> 100%
```

</div>

////

### Install from `requirements.txt` { #install-from-requirements-txt }

If you have a `requirements.txt`, you can now use it to install its packages.

//// tab | `pip`

<div class="termy">

```console
$ pip install -r requirements.txt

import importlib
from types import ModuleType

import pytest
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(
    name="mod",
    params=[
        pytest.param("tutorial001_py39"),
        pytest.param("tutorial001_py310", marks=needs_py310),
    ],
)
def get_module(request: pytest.FixtureRequest):
    module = importlib.import_module(f"docs_src.encoder.{request.param}")

 * <p>
 * The mojo class can also be injected with an {@link Execute} annotation to specify a
 * forked lifecycle.
 * </p>
 * <p>
 * The {@link Parameter} annotation can be added on fields to inject data
 * from the plugin configuration or from other components.
 * </p>
 * <p>
 * Fields can also be annotated with the {@link Resolution} annotation to be injected
 * with the dependency collection or resolution result for the project.
 * </p>
 *

import json
import secrets
import subprocess
from collections.abc import Iterable
from functools import lru_cache
from os import sep as pathsep
from pathlib import Path
from typing import Annotated

import git
import typer
import yaml
from github import Github
from pydantic_ai import Agent
from rich import print

non_translated_sections = (
    f"reference{pathsep}",
    "release-notes.md",
    "fastapi-people.md",

        super(message, cause);
        problems = ProblemCollector.empty();
    }

    /**
     * Constructs a new exception with the specified message and problems.
     * The message will be enhanced with details from the problems.
     *
     * @param message the detail message
     * @param problems the collection of problems associated with this exception
     */