from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[list[str], Query()] = ["foo", "bar"]):
    query_items = {"q": q}

用它們裝飾一個只包含單一 `yield` 的函式。

這正是 **FastAPI** 在內部為含 `yield` 的相依所使用的方法。

但你不需要（而且也不該）在 FastAPI 的相依上使用這些裝飾器。

FastAPI 會在內部替你處理好。

from fastapi import FastAPI

app = FastAPI()

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


@app.get("/items/")
async def read_item(skip: int = 0, limit: int = 10):

from typing import Any

from fastapi import FastAPI

app = FastAPI()


@app.vibe(
    "/vibe/",
    prompt="pls return json of users from database. make no mistakes",
)

from collections.abc import Callable

from fastapi import Body, FastAPI, HTTPException, Request, Response
from fastapi.exceptions import RequestValidationError
from fastapi.routing import APIRoute


class ValidationErrorLoggingRoute(APIRoute):
    def get_route_handler(self) -> Callable:
        original_route_handler = super().get_route_handler()

        async def custom_route_handler(request: Request) -> Response:
            try:

      - name: Decompress source distribution
        run: |
          cd dist
          tar xvf fastapi*.tar.gz
      - name: Install test dependencies
        run: |
          cd dist/fastapi*/
          pip install --group tests --editable .[all]
      - name: Run source distribution tests
        run: |
          cd dist/fastapi*/
          bash scripts/test.sh
      - name: Build wheel distribution
        run: |

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


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


class Message(BaseModel):
    message: str


app = FastAPI()


@app.get("/items/{item_id}", response_model=Item, responses={404: {"model": Message}})
async def read_item(item_id: str):
    if item_id == "foo":

## 開發 { #development }

當我開始著手實作 **FastAPI** 本身時，多數拼圖已經就緒，設計已定，需求與工具已備齊，對各項標準與規範的理解也清晰且新鮮。

## 未來 { #future }

到目前為止，**FastAPI** 及其理念已經對許多人有幫助。

相較先前的替代方案，它更適合許多使用情境，因而被選用。

許多開發者與團隊（包括我和我的團隊）已經在他們的專案中依賴 **FastAPI**。

但仍有許多改進與功能即將到來。

**FastAPI** 的前景非常光明。

import pytest
from fastapi import FastAPI
from fastapi.testclient import TestClient
from inline_snapshot import snapshot


@pytest.fixture(name="client")
def get_client(request):
    separate_input_output_schemas = request.param
    app = FastAPI(separate_input_output_schemas=separate_input_output_schemas)

    from pydantic import BaseModel, computed_field

    class Rectangle(BaseModel):
        width: int
        length: int

from typing import Annotated

from fastapi import FastAPI, Header

app = FastAPI()


@app.get("/items/")
async def read_items(
    strange_header: Annotated[str | None, Header(convert_underscores=False)] = None,
):