}
            }
        },
        "components": {
            "securitySchemes": {
                "APIKeyQuery": {"type": "apiKey", "name": "key", "in": "query"}
            }
        },

```console
$ pip install python-multipart
```

///

## `Form` 임포트하기

`fastapi`에서 `Form`을 임포트합니다:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[3] *}

## `Form` 매개변수 정의하기

`Body` 또는 `Query`와 동일한 방식으로 폼 매개변수를 만듭니다:

{* ../../docs_src/request_forms/tutorial001_an_py39.py hl[9] *}

예를 들어, OAuth2 사양을 사용할 수 있는 방법 중 하나("패스워드 플로우"라고 함)로 `username`과 `password`를 폼 필드로 보내야 합니다.

func (w *nullResponseWriter) WriteHeader(statusCode int) {
}

func (w *nullResponseWriter) Flush() {
}

func benchmarkSelect(b *testing.B, count int, query string) {
	requestXML := []byte(`
<?xml version="1.0" encoding="UTF-8"?>
<SelectObjectContentRequest>
    <Expression>` + query + `</Expression>
    <ExpressionType>SQL</ExpressionType>
    <InputSerialization>
        <CompressionType>NONE</CompressionType>
        <CSV>

There you can set:

* The "Item ID", used in the path.
* The "Token" used as a query parameter.

/// tip

Notice that the query `token` will be handled by a dependency.

///

With that you can connect the WebSocket and then send and receive messages:

<img src="/img/tutorial/websockets/image05.png">

        }

    private
    fun queryKotlinMetadata(ctClass: CtClass, query: (KotlinClassMetadata) -> Boolean): Boolean =
        ctClass.metadata
            ?.let { KotlinClassMetadata.readStrict(it) }
            ?.let { query(it) }
            ?: false

    private
    val CtClass.metadata: Metadata?
        get() = ctAnnotation<Metadata>()?.let { annotation ->

		var first, last User
		if err := DB.Where("id = ?", users[0].ID).First(&first).Error; err != nil {
			t.Errorf("errors happened when query before user: %v", err)
		}
		CheckUser(t, first, *users[0])

		if err := DB.Where("id = ?", users[2].ID).First(&last).Error; err != nil {
			t.Errorf("errors happened when query after user: %v", err)
		}
		CheckUser(t, last, *users[2])
	}

	if err := DB.Create(&users).Error; err != nil {

Pydantic 모델과 같이 `Field()`를 사용할 때 추가적인 `examples`를 선언할 수 있습니다:

{* ../../docs_src/schema_extra_example/tutorial002_py310.py hl[2,8:11] *}

## JSON Schema에서의 `examples` - OpenAPI

이들 중에서 사용합니다:

* `Path()`
* `Query()`
* `Header()`
* `Cookie()`
* `Body()`
* `Form()`
* `File()`

**OpenAPI**의 **JSON 스키마**에 추가될 부가적인 정보를 포함한 `examples` 모음을 선언할 수 있습니다.

### `examples`를 포함한 `Body`

    * It depends on the `query_extractor`, and assigns the value returned by it to the parameter `q`.
* It also declares an optional `last_query` cookie, as a `str`.
    * If the user didn't provide any query `q`, we use the last query used, which we saved to a cookie before.

## Use the dependency { #use-the-dependency }

Then we can use the dependency with:

{* ../../docs_src/dependencies/tutorial005_an_py310.py hl[23] *}

                        "operationId": "read_heroes_heroes__get",
                        "parameters": [
                            {
                                "name": "offset",
                                "in": "query",
                                "required": False,
                                "schema": {
                                    "type": "integer",
                                    "default": 0,

    def __call__(self, q: str = ""):
        if q:
            return self.fixed_content in q
        return False


checker = FixedContentQueryChecker("bar")


@app.get("/query-checker/")
async def read_query_check(fixed_content_included: bool = Depends(checker)):