* `dict`의 값(value)는 `float`타입이다. (각 아이템의 가격(price))

#### `Optional`

`str`과 같이 타입을 선언할 때 `Optional`을 쓸 수도 있는데, "선택적(Optional)"이기때문에 `None`도 될 수 있습니다:

```Python hl_lines="1  4"
{!../../docs_src/python_types/tutorial009.py!}
```

`Optional[str]`을 `str` 대신 쓰게 되면, 특정 값이 실제로는 `None`이 될 수도 있는데 항상 `str`이라고 가정하는 상황에서 에디터가 에러를 찾게 도와줄 수 있습니다.

#### Generic(제네릭) 타입

이 타입은 대괄호 안에 매개변수를 가지며, 종류는:

* `List`

				changed = true
			}
		}
		if changed {
			res := ObjectToInstance(se)
			messages.Add(msg.NewUpdateIncompatibility(res,
				"ENABLE_RESOLUTION_NONE_TARGET_PORT", "1.21",
				"ServiceEntry with resolution NONE and a targetPort set previously did nothing but now is respected", "1.21"))
		}
	}
	return nil
}

func checkPilot(cli kube.CLIClient, namespace string, messages *diag.Messages) error {

  internal val taskRunner: TaskRunner,
  internal val name: String,
) {
  val lock: ReentrantLock = ReentrantLock()

  internal var shutdown = false

  /** This queue's currently-executing task, or null if none is currently executing. */
  internal var activeTask: Task? = null

  /** Scheduled tasks ordered by [Task.nextExecuteNanoTime]. */
  internal val futureTasks = mutableListOf<Task>()

      + timeSeries.queryOptions.withInterval('15s')
      + timeSeries.standardOptions.withUnit('ops')
      + custom.withFillOpacity(100)
      + custom.withShowPoints('never')
      + custom.withGradientMode('none'),

    xdsPushes(title, targets, desc=''):
      self.bars(title, targets, desc='')
      + timeSeries.standardOptions.withOverrides([
        overrideSeries('cds', 'Clusters'),

         },
         "fieldConfig": {
            "defaults": {
               "custom": {
                  "drawStyle": "bars",
                  "fillOpacity": 100,
                  "gradientMode": "none",
                  "showPoints": "never",
                  "stacking": {
                     "mode": "normal"
                  }
               },
               "unit": "ops"
            },

	EnvKafkaProducerCompressionCodec = "MINIO_NOTIFY_KAFKA_PRODUCER_COMPRESSION_CODEC"
	EnvKafkaProducerCompressionLevel = "MINIO_NOTIFY_KAFKA_PRODUCER_COMPRESSION_LEVEL"
)

var codecs = map[string]sarama.CompressionCodec{
	"none":   sarama.CompressionNone,
	"gzip":   sarama.CompressionGZIP,
	"snappy": sarama.CompressionSnappy,
	"lz4":    sarama.CompressionLZ4,
	"zstd":   sarama.CompressionZSTD,
}

// KafkaArgs - Kafka target arguments.

			content:    "hello",
			partNumber: "1",
			fault:      None,
			accessKey:  credentials.AccessKey,
			secretKey:  credentials.SecretKey,

			expectedAPIError: -1,
		},
		// Case where part number is invalid.
		1: {
			objectName: testObject,
			content:    "hello",
			partNumber: "9999999999999999999",
			fault:      None,
			accessKey:  credentials.AccessKey,

  labels:
    app: {{ template "minio.name" . }}
    chart: {{ template "minio.chart" . }}
    release: {{ .Release.Name }}
    heritage: {{ .Release.Service }}
spec:
  publishNotReadyAddresses: true
  clusterIP: None
  ports:
    - name: {{ $scheme }}
      port: {{ .Values.service.port }}
      protocol: TCP
      targetPort: {{ .Values.minioAPIPort }}
  selector:
    app: {{ template "minio.name" . }}

/// note

👀 👈 👆 ✔️ 📨 🖼 ⚙️ `FileResponse` 🔗.

///

/// info

🚥 👆 ✔ 🎏 📻 🆎 🎯 👆 `responses` 🔢, FastAPI 🔜 🤔 📨 ✔️ 🎏 📻 🆎 👑 📨 🎓 (🔢 `application/json`).

✋️ 🚥 👆 ✔️ ✔ 🛃 📨 🎓 ⏮️ `None` 🚮 📻 🆎, FastAPI 🔜 ⚙️ `application/json` 🙆 🌖 📨 👈 ✔️ 👨‍💼 🏷.

///

## 🌀 ℹ

👆 💪 🌀 📨 ℹ ⚪️➡️ 💗 🥉, 🔌 `response_model`, `status_code`, & `responses` 🔢.

                    return elements[index];
                  }
                };
              }
            })
        .named("AbstractList")
        .withFeatures(
            CollectionFeature.NONE, CollectionFeature.ALLOWS_NULL_VALUES, CollectionSize.ANY)
        .suppressing(suppressForAbstractList())
        .createTestSuite();
  }

  public Test testsForAbstractSequentialList() {