It's all based on standard **Python type** declarations (thanks to Pydantic). No new syntax to learn. Just standard modern Python.

If you need a 2 minute refresher of how to use Python types (even if you don't use FastAPI), check the short tutorial: [Python Types](python-types.md){.internal-link target=_blank}.

You write standard Python with types:

```Python
from datetime import date

from pydantic import BaseModel

}

@test "Pip package generated license includes all dependencies' licenses" {
  do_external_licenses_check \
    "//tensorflow/tools/pip_package:wheel" \
    "//tensorflow/tools/pip_package:licenses"
}

@test "Libtensorflow generated license includes all dependencies' licenses" {
  do_external_licenses_check \
    "//tensorflow:libtensorflow.so" \
    "//tensorflow/tools/lib_package:clicenses_generate"
}

        Prefer to use the `Annotated` version if possible.

    ```Python hl_lines="10"
    {!> ../../../docs_src/dependencies/tutorial011.py!}
    ```

In this case, this `__call__` is what **FastAPI** will use to check for additional parameters and sub-dependencies, and this is what will be called to pass a value to the parameter in your *path operation function* later.

## Parameterize the instance

    ```

These dependencies will be executed/solved the same way as normal dependencies. But their value (if they return any) won't be passed to your *path operation function*.

!!! tip
    Some editors check for unused function parameters, and show them as errors.

    Using these `dependencies` in the *path operation decorator* you can make sure they are executed while avoiding editor/tooling errors.

    SignerType: 1
  }
}
```

### Using MinIO Console

- Open MinIO URL on the browser, lets say <http://localhost:9000/>
- Click on `Login with SSO`
- User will be redirected to the Casdoor user login page, upon successful login the user will be redirected to MinIO page and logged in automatically,

read_users["/users/"]

common_parameters --> read_items
common_parameters --> read_users
```

This way you write shared code once and **FastAPI** takes care of calling it for your *path operations*.

!!! check
    Notice that you don't have to create a special class and pass it somewhere to **FastAPI** to "register" it or anything similar.

    You just pass it to `Depends` and **FastAPI** knows how to do the rest.

```Python hl_lines="21"
{!../../../docs_src/path_operation_configuration/tutorial005.py!}
```

!!! info "정보"
    `response_description`은 구체적으로 응답을 지칭하며, `description`은 일반적인 *경로 작동*을 지칭합니다.

!!! check "확인"
    OpenAPI는 각 *경로 작동*이 응답에 관한 설명을 요구할 것을 명시합니다.

    따라서, 응답에 관한 설명이 없을경우, **FastAPI**가 자동으로 "성공 응답" 중 하나를 생성합니다.

<img src="/img/tutorial/path-operation-configuration/image03.png">

## 단일 *경로 작동* 지원중단

    receivedPongCount++
    awaitingPong = false
  }

  override fun onReadClose(
    code: Int,
    reason: String,
  ) {
    require(code != -1)

    synchronized(this) {
      check(receivedCloseCode == -1) { "already closed" }
      receivedCloseCode = code
      receivedCloseReason = reason
    }

    listener.onClosing(this, code, reason)
  }

=== "Python 3.8+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/query_params/tutorial002.py!}
    ```

In this case, the function parameter `q` will be optional, and will be `None` by default.

!!! check
    Also notice that **FastAPI** is smart enough to notice that the path parameter `item_id` is a path parameter and `q` is not, so, it's a query parameter.

## Query parameter type conversion

```Python hl_lines="9"
{!../../../docs_src/query_params/tutorial002.py!}
```

Ici, le paramètre `q` sera optionnel, et aura `None` comme valeur par défaut.

!!! check "Remarque"
    On peut voir que **FastAPI** est capable de détecter que le paramètre de chemin `item_id` est un paramètre de chemin et que `q` n'en est pas un, c'est donc un paramètre de requête.

!!! note