return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

`fastapi dev` サーバーは自動でリロードされるはずです。

### 自動対話型 API ドキュメントのアップグレード { #interactive-api-docs-upgrade }

from pydantic import BaseModel

fake_db = {}


class Item(BaseModel):
    title: str
    timestamp: datetime
    description: str | None = None


app = FastAPI()


@app.put("/items/{id}")
def update_item(id: str, item: Item):
    json_compatible_item_data = jsonable_encoder(item)

    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}


@app.put("/items/{item_id}")
def update_item(item_id: int, item: Item):
    return {"item_name": item.name, "item_id": item_id}
```

`fastapi dev` 伺服器應會自動重新載入。

### 互動式 API 文件升級 { #interactive-api-docs-upgrade }

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, q: str | None = None):
    result = {"item_id": item_id, **item.model_dump()}
    if q:
        result.update({"q": q})

    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()
    image: Image | None = None


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

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

        app = FastAPI()
        router = APIRouter()

        @router.patch("/items/")
        def update_item(item: Item):
            return {"message": "Item updated in place"}

        app.include_router(router)
        ```
        """
        return self.api_route(
            path=path,

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

        app = FastAPI()

        @app.patch("/items/")
        def update_item(item: Item):
            return {"message": "Item updated in place"}
        ```
        """
        return self.router.patch(
            path,
            response_model=response_model,

        CharMappingItem updateItem1 = item1.get();
        updateItem1.setNewInputs(new String[] { "m", "n" });
        updateItem1.setNewOutput("o");

        // Create another update for the same item
        CharMappingItem updateItem2 = new CharMappingItem(1L, new String[] { "x", "y" }, "z");
        updateItem2.setNewInputs(new String[] { "p", "q" });
        updateItem2.setNewOutput("r");

        loadTestData();

        StopwordsItem originalItem = stopwordsFile.get(1).get();
        StopwordsItem updateItem = new StopwordsItem(1, "the");
        updateItem.setNewInput("modified");

        StopwordsFile.StopwordsUpdater updater = stopwordsFile.new StopwordsUpdater(updateItem);

        StopwordsItem result = updater.write(originalItem);
        assertNotNull(result);

        assertNotNull(result1);
        assertFalse(result1.hasFailure());

        runner.refresh();

        // Second write with update
        SuggestItem updatedItem = new SuggestItem(new String[] { "テスト" }, readings, new String[] { "content" }, 2, 0, -1,
                new String[] { "tag2" }, new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);