```Python
@lru_cache
def say_hi(name: str, salutation: str = "Ms."):
    return f"Hello {salutation} {name}"
```

könnte Ihr Programm so ausgeführt werden:

```mermaid
sequenceDiagram

participant code as Code
participant function as say_hi()
participant execute as Funktion ausgeführt

    rect rgba(0, 255, 0, .1)
        code ->> function: say_hi(name="Camila")

```Python
@lru_cache
def say_hi(name: str, salutation: str = "Ms."):
    return f"Hello {salutation} {name}"
```

your program could execute like this:

```mermaid
sequenceDiagram

participant code as Code
participant function as say_hi()
participant execute as Execute function

    rect rgba(0, 255, 0, .1)
        code ->> function: say_hi(name="Camila")

	for {
		select {
		case hi, hasMore := <-healthInfoCh:
			if !hasMore {
				// Received all data. Send to SUBNET and return
				err := sendHealthInfo(ctx, healthInfo)
				if err != nil {
					internalLogIf(ctx, fmt.Errorf("Unable to perform callhome: %w", err))
				}
				return
			}
			healthInfo = hi
		case <-healthCtx.Done():
			return
		}
	}
}

    assertThat(client.closed).isFalse()
    client.webSocket!!.close(1000, "Hi!")
    server.processNextFrame()
    client.listener.assertClosing(1000, "Hello!")
    server.listener.assertClosing(1000, "Hi!")
    client.webSocket!!.finishReader()
    server.webSocket!!.finishReader()
    client.listener.assertClosed(1000, "Hello!")
    server.listener.assertClosed(1000, "Hi!")
    taskFaker.runTasks()
    assertThat(client.closed).isTrue()

    val request = request().post("Hi?".toRequestBody(PLAIN)).build()
    val response = client.newCall(request).execute()
    response.body.close()
    applicationLogs
      .assertLogEqual("--> POST $url")
      .assertLogEqual("Content-Type: text/plain; charset=utf-8")
      .assertLogEqual("Content-Length: 3")
      .assertLogEqual("")
      .assertLogEqual("Hi?")
      .assertLogEqual("--> END POST (3-byte body)")

			di.Scanning = info.Scanning
			di.State = diskErrToDriveState(err)
			di.FreeInodes = info.FreeInodes
			di.UsedInodes = info.UsedInodes
			if info.Healing {
				if hi := disks[index].Healing(); hi != nil {
					hd := hi.toHealingDisk()
					di.HealInfo = &hd
				}
			}
			di.Metrics = &madmin.DiskMetrics{
				LastMinute:              make(map[string]madmin.TimedAction, len(info.Metrics.LastMinute)),

		t.Fatalf("got %v, expected nil", err)
	}
	zh := zf.File[0].FileHeader
	if zh.Name != h.Name || zh.Method != h.Method || zh.UncompressedSize64 != uint64(len("hi")) {
		t.Fatalf("got %q/%d/%d expected %q/%d/%d", zh.Name, zh.Method, zh.UncompressedSize64, h.Name, h.Method, len("hi"))
	}
}

// Issue 4302.
func TestHeaderInvalidTagAndSize(t *testing.T) {
	const timeFormat = "20060102T150405.000.txt"

	ts := time.Now()

       *
       * Example:
       * ```
       * --> POST /greeting http/1.1
       * Host: example.com
       * Content-Type: plain/text
       * Content-Length: 3
       *
       * Hi?
       * --> END POST
       *
       * <-- 200 OK (22ms)
       * Content-Type: plain/text
       * Content-Length: 6
       *
       * Hello!
       * <-- END HTTP
       * ```
       */

```Python
say_hi()  # Oh, nein, das löst einen Fehler aus! 😱
```

Der `name` Parameter wird **immer noch benötigt** (nicht *optional*), weil er keinen Default-Wert hat. `name` akzeptiert aber dennoch `None` als Wert:

```Python
say_hi(name=None)  # Das funktioniert, None is gültig 🎉
```

{!../../../docs_src/python_types/tutorial009c.py!}
```

🔢 `name` 🔬 `Optional[str]`, ✋️ ⚫️ **🚫 📦**, 👆 🚫🔜 🤙 🔢 🍵 🔢:

```Python
say_hi()  # Oh, no, this throws an error! 😱
```

`name` 🔢 **✔** (🚫 *📦*) ↩️ ⚫️ 🚫 ✔️ 🔢 💲. , `name` 🚫 `None` 💲:

```Python
say_hi(name=None)  # This works, None is valid 🎉
```

👍 📰, 🕐 👆 🔛 🐍 3️⃣.1️⃣0️⃣ 👆 🏆 🚫 ✔️ 😟 🔃 👈, 👆 🔜 💪 🎯 ⚙️ `|` 🔬 🇪🇺 🆎: