{* ../../docs_src/python_types/tutorial009c.py hl[1,4] *}

پارامتر `name` به‌عنوان `Optional[str]` تعریف شده، ولی **اختیاری نیست**، نمی‌تونی تابع رو بدون پارامتر صدا کنی:

```Python
say_hi()  # اوه نه، این خطا می‌ده! 😱
```

پارامتر `name` **هنوز لازمه** (نه *اختیاری*) چون مقدار پیش‌فرض نداره. با این حال، `name` مقدار `None` رو قبول می‌کنه:

```Python
say_hi(name=None)  # این کار می‌کنه، None معتبره 🎉
```

                      multimap.put(entry.getKey(), entry.getValue());
                    }
                    return multimap;
                  }
                })
            .named("HashMultimap")
            .withFeatures(
                MapFeature.ALLOWS_NULL_KEYS,
                MapFeature.ALLOWS_NULL_VALUES,
                MapFeature.ALLOWS_ANY_NULL_QUERIES,

  @AndroidIncompatible // test-suite builders
  public static Test suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        MapTestSuiteBuilder.using(new ImmutableEnumMapGenerator())
            .named("Maps.immutableEnumMap")
            .withFeatures(CollectionSize.ANY, SERIALIZABLE, ALLOWS_NULL_QUERIES)
            .createTestSuite());
    suite.addTestSuite(ImmutableEnumMapTest.class);
    return suite;
  }

                      multimap.put(entry.getKey(), entry.getValue());
                    }
                    return multimap;
                  }
                })
            .named("HashMultimap")
            .withFeatures(
                MapFeature.ALLOWS_NULL_KEYS,
                MapFeature.ALLOWS_NULL_VALUES,
                MapFeature.ALLOWS_ANY_NULL_QUERIES,

Most of the standard headers are separated by a "hyphen" character, also known as the "minus symbol" (`-`).

But a variable like `user-agent` is invalid in Python.

So, by default, `Header` will convert the parameter names characters from underscore (`_`) to hyphen (`-`) to extract and document the headers.

Also, HTTP headers are case-insensitive, so, you can declare them with standard Python style (also known as "snake_case").

* 2개의 대화형 문서 웹 인터페이스를 직접 제공.

---

우리는 그저 수박 겉 핥기만 했을 뿐인데 여러분은 벌써 어떻게 작동하는지 알고 있습니다.

다음 줄을 바꿔보십시오:

```Python
    return {"item_name": item.name, "item_id": item_id}
```

...에서:

```Python
        ... "item_name": item.name ...
```

...으로:

```Python
        ... "item_price": item.price ...
```

...그러고 나서 여러분의 편집기가 속성과 타입을 알고 자동 완성하는지 보십시오:

	httpRequestsDuration = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "s3_ttfb_seconds",
			Help:    "Time taken by requests served by current MinIO server instance",
			Buckets: []float64{.05, .1, .25, .5, 1, 2.5, 5, 10},
		},
		[]string{"api"},
	)
	bucketHTTPRequestsDuration = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "s3_ttfb_seconds",

    }

    /**
     * Adds click count information to the document.
     *
     * @param doc the document to update
     * @param url the URL to get click count for
     * @param clickCountField the field name to store click count
     */
    protected void addClickCountField(final Map<String, Object> doc, final String url, final String clickCountField) {
        final SearchLogHelper searchLogHelper = ComponentUtil.getSearchLogHelper();

    public void testReadBytesWireFormatWithoutExtendedSecurity() throws UnsupportedEncodingException {
        response.getServerData().scapabilities = 0;
        response.getServerData().encryptionKeyLength = 8;
        // Domain name in OEM encoding (ASCII) with null terminator
        byte[] domainBytes = "DOMAIN\0".getBytes("US-ASCII");
        // Use reflection to set protected byteCount field
        int byteCountValue = 8 + domainBytes.length;

[Prometheus](https://prometheus.io) is a cloud-native monitoring platform. Prometheus offers a multi-dimensional data model with time series data identified by metric name and key/value pairs. The data collection happens via a pull model over HTTP/HTTPS. Users looking to monitor their MinIO instances can point Prometheus configuration to scrape data from following endpoints.