from pydantic import BaseModel, Field

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = Field(
        default=None, title="The description of the item", max_length=300
    )
    price: float = Field(gt=0, description="The price must be greater than zero")
    tax: Union[float, None] = None


@app.put("/items/{item_id}")

        "couchbase://couchbasehost:8091?fetch_mutation_tokens=1&operation_timeout=30&n1ql_timeout=300"
    )
    authenticator = PasswordAuthenticator("username", "password")
    cluster.authenticate(authenticator)
    bucket: Bucket = cluster.open_bucket("bucket_name", lockmode=LOCKMODE_WAIT)
    bucket.timeout = 30
    bucket.n1ql_timeout = 300
    return bucket


class User(BaseModel):
    username: str