import importlib

import pytest
from fastapi.testclient import TestClient


@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial007_py39"),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(
        f"docs_src.path_operation_advanced_configuration.{request.param}"
    )

    client = TestClient(mod.app)
    return client

{* ../../docs_src/python_types/tutorial003_py39.py hl[1] *}

Так как редактор кода знает типы переменных, вы получаете не только автозавершение, но и проверки ошибок:

<img src="/img/python-types/image04.png">

Теперь вы знаете, что нужно исправить — преобразовать `age` в строку с помощью `str(age)`:

{* ../../docs_src/python_types/tutorial004_py39.py hl[2] *}

## Объявление типов { #declaring-types }

import importlib

import pytest
from fastapi.testclient import TestClient

from ...utils import needs_py310


@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial007_py39"),
        pytest.param("tutorial007_py310", marks=needs_py310),
        pytest.param("tutorial007_an_py39"),
        pytest.param("tutorial007_an_py310", marks=needs_py310),
    ],
)
def get_client(request: pytest.FixtureRequest):

{* ../../docs_src/dependencies/tutorial007_py39.py hl[2:4] *}

O valor gerado (yielded) é o que é injetado nas *operações de rota* e outras dependências:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[4] *}

O código após o `yield` é executado após a resposta:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[5:6] *}

/// tip | Dica

{* ../../docs_src/dependencies/tutorial007_py39.py hl[2:4] *}

The yielded value is what is injected into *path operations* and other dependencies:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[4] *}

The code following the `yield` statement is executed after the response:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[5:6] *}

/// tip

You can use `async` or regular functions.

import importlib
from base64 import b64encode

import pytest
from fastapi.testclient import TestClient


@pytest.fixture(
    name="client",
    params=[
        pytest.param("tutorial007_py39"),
        pytest.param("tutorial007_an_py39"),
    ],
)
def get_client(request: pytest.FixtureRequest):
    mod = importlib.import_module(f"docs_src.security.{request.param}")
    return TestClient(mod.app)

{* ../../docs_src/custom_response/tutorial006c_py39.py hl[2,7,9] *}

### `StreamingResponse` { #streamingresponse }

Takes an async generator or a normal generator/iterator and streams the response body.

{* ../../docs_src/custom_response/tutorial007_py39.py hl[2,14] *}

{* ../../docs_src/custom_response/tutorial006c_py39.py hl[2,7,9] *}

### `StreamingResponse` { #streamingresponse }

Nimmt einen asynchronen Generator oder einen normalen Generator/Iterator und streamt den Responsebody.

{* ../../docs_src/custom_response/tutorial007_py39.py hl[2,14] *}

{* ../../docs_src/python_types/tutorial003_py39.py hl[1] *}

Da der Editor die Typen der Variablen kennt, erhalten Sie nicht nur Code-Vervollständigung, sondern auch eine Fehlerprüfung:

<img src="/img/python-types/image04.png">

Jetzt, da Sie wissen, dass Sie das reparieren müssen, konvertieren Sie `age` mittels `str(age)` in einen String:

{* ../../docs_src/python_types/tutorial004_py39.py hl[2] *}

{* ../../docs_src/custom_response/tutorial006c_py39.py hl[2,7,9] *}

### `StreamingResponse` { #streamingresponse }

Принимает асинхронный генератор или обычный генератор/итератор и отправляет тело ответа потоково.

{* ../../docs_src/custom_response/tutorial007_py39.py hl[2,14] *}