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## 多個路徑與查詢參數 { #multiple-path-and-query-parameters }

你可以同時宣告多個路徑參數與查詢參數，FastAPI 會自動分辨。

而且不必按特定順序宣告。

會依名稱辨識：

{* ../../docs_src/query_params/tutorial004_py310.py hl[6,8] *}

## 必填查詢參數 { #required-query-parameters }

當你為非路徑參數（目前我們只看到查詢參數）宣告了預設值時，它就不是必填。

若你不想提供特定預設值、只想讓它為選填，將預設值設為 `None`。

但若你要讓查詢參數成為必填，只要不要宣告任何預設值：

{* ../../docs_src/query_params/tutorial005_py310.py hl[6:7] *}

 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,