description: str | None = None
    secret_key: str


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


@app.get("/items/me", response_model=Item)
async def get_item() -> Any:
    item = InternalItem(
        name="Foo", description="A very nice Item", secret_key="supersecret"
    )
    return item
```

## Performance

from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()


@app.post("/items/", summary="Create an item")
async def create_item(item: Item) -> Item:
    """
    Create an item with all the information:

    - **name**: each item must have a name
    - **description**: a long description

}


@app.get("/items/{item_id}", response_model=Item)
async def read_item(item_id: str):
    return items[item_id]


@app.put("/items/{item_id}", response_model=Item)
async def update_item(item_id: str, item: Item):
    update_item_encoded = jsonable_encoder(item)
    items[item_id] = update_item_encoded

from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()


@app.post("/items/", status_code=status.HTTP_201_CREATED)
async def create_item(item: Item) -> Item:

					</c:if> <c:if test="${!empty lang}">
						<c:forEach var="sLang" items="${lang}">
							<c:forEach var="item" items="${langItems}">
								<c:if test="${item.value==sLang}">${f:h(item.label)}</c:if>
							</c:forEach>
						</c:forEach>
					</c:if>
			</a></li>
			<c:if test="${displayLabelTypeItems}">
				<li class="list-inline-item"><la:message key="labels.searchoptions_menu_labels" /> <a

					</c:if> <c:if test="${!empty lang}">
						<c:forEach var="sLang" items="${lang}">
							<c:forEach var="item" items="${langItems}">
								<c:if test="${item.value==sLang}">${f:h(item.label)}</c:if>
							</c:forEach>
						</c:forEach>
					</c:if>
			</a></li>
			<c:if test="${displayLabelTypeItems}">
				<li class="list-inline-item"><la:message key="labels.searchoptions_menu_labels" /> <a

Supposons que vous n'ayez qu'un seul paramètre `item` dans le corps de la requête, provenant d'un modèle Pydantic `Item`.

Par défaut, **FastAPI** attendra alors son contenu directement.

                        "summary": "Update Item",
                    },
                },
            },
            "components": {
                "schemas": {
                    "Body_update_item_items__item_id__put": {
                        "properties": {
                            "item": {
                                "$ref": "#/components/schemas/Item",
                            },

    try {
      equalsTester.testEquals();
    } catch (AssertionFailedError e) {
      assertErrorMessage(
          e,
          equalObject1
              + " [group 1, item 1] must be Object#equals to "
              + notEqualObject1
              + " [group 1, item 2]");
      return;
    }
    fail("Should get not equal to equal object error");
  }

  /**

async def read_user_item(
    user_id: int, item_id: str, q: str | None = None, short: bool = False
):
    item = {"item_id": item_id, "owner_id": user_id}
    if q:
        item.update({"q": q})
    if not short:
        item.update(
            {"description": "This is an amazing item that has a long description"}
        )