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docs/en/docs/reference/request.md

Read more about it in the [FastAPI docs about using Request directly](https://fastapi.tiangolo.com/advanced/using-request-directly/)

You can import it directly from `fastapi`:

```python
from fastapi import Request
```

/// tip

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github.com/tiangolo/fastapi

docs_src/query_params/tutorial006_py310.py

from fastapi import FastAPI

app = FastAPI()


@app.get("/items/{item_id}")
async def read_user_item(
    item_id: str, needy: str, skip: int = 0, limit: int | None = None
):
    item = {"item_id": item_id, "needy": needy, "skip": skip, "limit": limit}

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs_src/query_params_str_validations/tutorial009_an_py310.py

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[str | None, Query(alias="item-query")] = None):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs_src/response_directly/tutorial002_py310.py

from fastapi import FastAPI, Response

app = FastAPI()


@app.get("/legacy/")
def get_legacy_data():
    data = """<?xml version="1.0"?>
    <shampoo>
    <Header>
        Apply shampoo here.
    </Header>
    <Body>
        You'll have to use soap here.
    </Body>
    </shampoo>
    """

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github.com/tiangolo/fastapi

docs/zh-hant/docs/advanced/generate-clients.md

/// tip

FastAPI 會自動產生 **OpenAPI 3.1** 規格，因此你使用的任何工具都必須支援這個版本。

///

## 來自 FastAPI 贊助商的 SDK 產生器 { #sdk-generators-from-fastapi-sponsors }

本節重點介紹由贊助 FastAPI 的公司提供的**創投支持**與**公司維運**的解決方案。這些產品在高品質的自動產生 SDK 之外，還提供**額外功能**與**整合**。

透過 ✨ [**贊助 FastAPI**](../help-fastapi.md#sponsor-the-author) ✨，這些公司幫助確保框架與其**生態系**維持健康且**永續**。

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github.com/tiangolo/fastapi

docs_src/query_params_str_validations/tutorial003_an_py310.py

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Annotated[str | None, Query(min_length=3, max_length=50)] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

tests/test_http_connection_injection.py

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

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs_src/settings/app02_py310/main.py

from functools import lru_cache

from fastapi import Depends, FastAPI

from .config import Settings

app = FastAPI()


@lru_cache
def get_settings():
    return Settings()


@app.get("/info")
async def info(settings: Settings = Depends(get_settings)):
    return {
        "app_name": settings.app_name,
        "admin_email": settings.admin_email,
        "items_per_user": settings.items_per_user,

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github.com/tiangolo/fastapi

docs_src/settings/app03_py310/main.py

from functools import lru_cache

from fastapi import Depends, FastAPI

from . import config

app = FastAPI()


@lru_cache
def get_settings():
    return config.Settings()


@app.get("/info")
async def info(settings: config.Settings = Depends(get_settings)):
    return {
        "app_name": settings.app_name,
        "admin_email": settings.admin_email,
        "items_per_user": settings.items_per_user,

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs_src/body/tutorial003_py310.py

from fastapi import FastAPI
from pydantic import BaseModel


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


app = FastAPI()


@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item):

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Sat Dec 20 15:55:38 GMT 2025

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