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tests/test_tutorial/test_websockets/test_tutorial001.py

import pytest
from fastapi.testclient import TestClient
from fastapi.websockets import WebSocketDisconnect

from docs_src.websockets.tutorial001_py39 import app

client = TestClient(app)


def test_main():
    response = client.get("/")
    assert response.status_code == 200, response.text
    assert b"<!DOCTYPE html>" in response.content


def test_websocket():
    with pytest.raises(WebSocketDisconnect):

Registered: Sun Dec 28 07:19:09 UTC 2025

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github.com/tiangolo/fastapi

docs_src/sql_databases/tutorial001_an_py39.py


SessionDep = Annotated[Session, Depends(get_session)]

app = FastAPI()


@app.on_event("startup")
def on_startup():
    create_db_and_tables()


@app.post("/heroes/")
def create_hero(hero: Hero, session: SessionDep) -> Hero:
    session.add(hero)
    session.commit()
    session.refresh(hero)
    return hero


@app.get("/heroes/")
def read_heroes(
    session: SessionDep,

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/app/web/login/LoginAction.java

 */
package org.codelibs.fess.app.web.login;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.app.service.UserService;
import org.codelibs.fess.app.web.base.FessLoginAction;
import org.codelibs.fess.app.web.base.login.LocalUserCredential;
import org.codelibs.fess.app.web.profile.ProfileAction;

Registered: Sat Dec 20 09:19:18 UTC 2025

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github.com/tiangolo/fastapi

docs/pt/docs/tutorial/middleware.md

Quando você adiciona múltiplos middlewares usando o decorador `@app.middleware()` ou o método `app.add_middleware()`, cada novo middleware envolve a aplicação, formando uma pilha. O último middleware adicionado é o mais externo, e o primeiro é o mais interno.

No caminho da requisição, o middleware mais externo roda primeiro.

No caminho da resposta, ele roda por último.

Por exemplo:

```Python
app.add_middleware(MiddlewareA)

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github.com/tiangolo/fastapi

tests/test_modules_same_name_body/test_main.py

import pytest
from fastapi.testclient import TestClient

from .app.main import app

client = TestClient(app)


@pytest.mark.parametrize(
    "path", ["/a/compute", "/a/compute/", "/b/compute", "/b/compute/"]
)
def test_post(path):
    data = {"a": 2, "b": "foo"}
    response = client.post(path, json=data)
    assert response.status_code == 200, response.text
    assert data == response.json()


@pytest.mark.parametrize(

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github.com/tiangolo/fastapi

tests/test_tutorial/test_metadata/test_tutorial002.py

from fastapi.testclient import TestClient

from docs_src.metadata.tutorial002_py39 import app

client = TestClient(app)


def test_items():
    response = client.get("/items/")
    assert response.status_code == 200, response.text
    assert response.json() == [{"name": "Foo"}]


def test_get_openapi_json_default_url():
    response = client.get("/openapi.json")
    assert response.status_code == 404, response.text

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github.com/tiangolo/fastapi

docs_src/security/tutorial002_an_py39.py

from typing import Annotated, Union

from fastapi import Depends, FastAPI
from fastapi.security import OAuth2PasswordBearer
from pydantic import BaseModel

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")


class User(BaseModel):
    username: str
    email: Union[str, None] = None
    full_name: Union[str, None] = None
    disabled: Union[bool, None] = None


def fake_decode_token(token):

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github.com/tiangolo/fastapi

docs/ru/docs/tutorial/testing.md

Кроме того, Ваше приложение **FastAPI** может состоять из нескольких файлов, модулей и т.п.

### Файл приложения **FastAPI** { #fastapi-app-file }

Допустим, структура файлов Вашего приложения похожа на ту, что описана на странице [Более крупные приложения](bigger-applications.md){.internal-link target=_blank}:

```
.
├── app
│   ├── __init__.py
│   └── main.py
```

В файле `main.py` находится Ваше приложение **FastAPI**:

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github.com/tiangolo/fastapi

docs_src/additional_responses/tutorial002_py39.py

from typing import Union

from fastapi import FastAPI
from fastapi.responses import FileResponse
from pydantic import BaseModel


class Item(BaseModel):
    id: str
    value: str


app = FastAPI()


@app.get(
    "/items/{item_id}",
    response_model=Item,
    responses={
        200: {
            "content": {"image/png": {}},
            "description": "Return the JSON item or an image.",
        }
    },

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github.com/tiangolo/fastapi

docs_src/schema_extra_example/tutorial004_an_py310.py

from typing import Annotated

from fastapi import Body, FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None


@app.put("/items/{item_id}")
async def update_item(
    *,
    item_id: int,
    item: Annotated[
        Item,
        Body(
            examples=[
                {

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