=== "🐍 3️⃣.6️⃣ & 🔛"

    ```Python hl_lines="18  23"
    {!> ../../../docs_src/response_model/tutorial001_01.py!}
    ```

=== "🐍 3️⃣.9️⃣ & 🔛"

    ```Python hl_lines="18  23"
    {!> ../../../docs_src/response_model/tutorial001_01_py39.py!}
    ```

=== "🐍 3️⃣.1️⃣0️⃣ & 🔛"

    ```Python hl_lines="16  21"
    {!> ../../../docs_src/response_model/tutorial001_01_py310.py!}

=== "Python 3.10+"

    ```Python hl_lines="8-9"
    {!> ../../../docs_src/dependencies/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="8-11"
    {!> ../../../docs_src/dependencies/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9-12"
    {!> ../../../docs_src/dependencies/tutorial001_an.py!}
    ```

## `Field` 임포트

먼저 이를 임포트해야 합니다:

=== "Python 3.10+"

    ```Python hl_lines="4"
    {!> ../../../docs_src/body_fields/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="4"
    {!> ../../../docs_src/body_fields/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="4"
    {!> ../../../docs_src/body_fields/tutorial001_an.py!}
    ```

=== "Python 3.10+"

    ```Python hl_lines="7  48  55-56  59-60  69-75"
    {!> ../../../docs_src/security/tutorial004_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="7  48  55-56  59-60  69-75"
    {!> ../../../docs_src/security/tutorial004_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="7  49  56-57  60-61  70-76"

=== "Python 3.10+"

    ```Python hl_lines="22-27"
    {!> ../../../docs_src/schema_extra_example/tutorial003_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="22-27"
    {!> ../../../docs_src/schema_extra_example/tutorial003_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="23-28"
    {!> ../../../docs_src/schema_extra_example/tutorial003_an.py!}
    ```

    {!> ../../../docs_src/security/tutorial002_py310.py!}
    ```

## 현재 유저 주입하기

이제 *경로 작동*에서 `get_current_user`와 동일한 `Depends`를 사용할 수 있습니다.

=== "파이썬 3.7 이상"

    ```Python hl_lines="31"
    {!> ../../../docs_src/security/tutorial002.py!}
    ```

=== "파이썬 3.10 이상"

    ```Python hl_lines="29"
    {!> ../../../docs_src/security/tutorial002_py310.py!}
    ```

=== "Python 3.10+"

    ```Python hl_lines="8-9"
    {!> ../../../docs_src/dependencies/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="8-11"
    {!> ../../../docs_src/dependencies/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9-12"
    {!> ../../../docs_src/dependencies/tutorial001_an.py!}
    ```

=== "파이썬 3.6 이상"

    ```Python hl_lines="11-15"
    {!> ../../../docs_src/dependencies/tutorial002.py!}
    ```

=== "파이썬 3.10 이상"

    ```Python hl_lines="9-13"
    {!> ../../../docs_src/dependencies/tutorial002_py310.py!}
    ```

클래스의 인스턴스를 생성하는 데 사용되는 `__init__` 메서드에 주목하기 바랍니다:

=== "파이썬 3.6 이상"

    ```Python hl_lines="12"
    {!> ../../../docs_src/dependencies/tutorial002.py!}

    E.g. `pip install python-multipart`.

## Import `File` and `Form`

=== "Python 3.9+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/request_forms_and_files/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="1"
    {!> ../../../docs_src/request_forms_and_files/tutorial001_an.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip

# 查询参数和字符串校验

**FastAPI** 允许你为参数声明额外的信息和校验。

让我们以下面的应用程序为例：

=== "Python 3.10+"

    ```Python hl_lines="7"
    {!> ../../../docs_src/query_params_str_validations/tutorial001_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/query_params_str_validations/tutorial001.py!}
    ```

查询参数 `q` 的类型为 `str`，默认值为 `None`，因此它是可选的。

## 额外的校验