```python
    from typing import Annotated

    from fastapi import Depends, FastAPI
    from fastapi.security import HTTPBasic, HTTPBasicCredentials

    app = FastAPI()

    security = HTTPBasic()


    @app.get("/users/me")
    def read_current_user(credentials: Annotated[HTTPBasicCredentials, Depends(security)]):
        return {"username": credentials.username, "password": credentials.password}

from fastapi import Depends, FastAPI

app = FastAPI()


class FixedContentQueryChecker:
    def __init__(self, fixed_content: str):
        self.fixed_content = fixed_content

    def __call__(self, q: str = ""):
        if q:
            return self.fixed_content in q
        return False


checker = FixedContentQueryChecker("bar")


@app.get("/query-checker/")

        yield s


def broken_dep_session() -> Any:
    with acquire_session() as s:
        s.open = False
        yield s


SessionDep = Annotated[Session, Depends(dep_session)]
BrokenSessionDep = Annotated[Session, Depends(broken_dep_session)]

app = FastAPI()


@app.get("/data")
def get_data(session: SessionDep) -> Any:
    data = list(session)
    return data


@app.get("/stream-simple")

from typing import Annotated

from fastapi import Depends, FastAPI, HTTPException

app = FastAPI()


data = {
    "plumbus": {"description": "Freshly pickled plumbus", "owner": "Morty"},
    "portal-gun": {"description": "Gun to create portals", "owner": "Rick"},
}


class OwnerError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except OwnerError as e:

from datetime import datetime, timedelta, timezone

import jwt
from fastapi import Depends, FastAPI, HTTPException, Security, status
from fastapi.security import (
    OAuth2PasswordBearer,
    OAuth2PasswordRequestForm,
    SecurityScopes,
)
from jwt.exceptions import InvalidTokenError
from pwdlib import PasswordHash
from pydantic import BaseModel, ValidationError

# to get a string like this run:
# openssl rand -hex 32

from fastapi import Depends, FastAPI
from fastapi.requests import HTTPConnection
from fastapi.testclient import TestClient
from starlette.websockets import WebSocket

app = FastAPI()
app.state.value = 42


async def extract_value_from_http_connection(conn: HTTPConnection):
    return conn.app.state.value


@app.get("/http")
async def get_value_by_http(value: int = Depends(extract_value_from_http_connection)):
    return value

// 1. CompileAll is the seed build for docs:distDocs
// 2. BuildDistributions is the seed build for other asciidoctor tasks
// 3. buildScanPerformance test, which doesn't depend on compileAll
// 4. buildScanPerformance test, which doesn't depend on compileAll
    isInBuild(
        "Check_CompileAllBuild",
        "Check_BuildDistributions",
        "Component_GradlePlugin_Performance_PerformanceLatestMaster",

/// info | Технические детали

`Security` на самом деле является подклассом `Depends` и имеет всего один дополнительный параметр, который мы рассмотрим позже.

Но используя `Security` вместо `Depends`, **FastAPI** будет знать, что можно объявлять security scopes, использовать их внутри и документировать API в OpenAPI.

from typing import Annotated

from fastapi import Depends, FastAPI
from fastapi.testclient import TestClient
from typing_extensions import TypeAliasType


async def some_value() -> int:
    return 123


DependedValue = TypeAliasType(
    "DependedValue", Annotated[int, Depends(some_value)], type_params=()
)


def test_pep695_type_dependencies():
    app = FastAPI()

    @app.get("/")

from fastapi import Depends, FastAPI

app = FastAPI()


fake_items_db = [{"item_name": "Foo"}, {"item_name": "Bar"}, {"item_name": "Baz"}]


class CommonQueryParams:
    def __init__(self, q: str | None = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")
async def read_items(commons: CommonQueryParams = Depends(CommonQueryParams)):
    response = {}