from typing import Optional


def say_hi(name: Optional[str]):
    print(f"Hey {name}!")
```

`name` parametresi `Optional[str]` olarak tanımlıdır; ancak isteğe bağlı değildir, parametre olmadan fonksiyonu çağıramazsınız:

```Python
say_hi()  # Ah hayır, bu hata fırlatır! 😱
```

`name` parametresi varsayılan bir değeri olmadığı için hâlâ zorunludur (yani *optional* değildir). Yine de `name`, değer olarak `None` kabul eder:

```Python

    /**
     * Combines path and name to create a full object name.
     *
     * @param path the directory path
     * @param name the file or directory name
     * @return the full object name
     */
    public static String getObjectName(final String path, final String name) {
        return getPathPrefix(path) + name;
    }

    /**
     * Encodes an object name to a URL-safe base64 string.
     *

      STARLETTE_SRC: ${{ matrix.starlette-src }}
    steps:
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"
      - uses: actions/checkout@v6
      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: ${{ matrix.python-version }}
      - name: Setup uv
        uses: astral-sh/setup-uv@v7
        with:

    /**
     * Sets the header named [name] to [value]. If this request already has any headers
     * with that name, they are all replaced.
     */
    open fun header(
      name: String,
      value: String,
    ) = apply {
      headers[name] = value
    }

    /**
     * Adds a header with [name] and [value]. Prefer this method for multiply-valued
     * headers like "Cookie".

        assertEquals("RESOLVER_WINS", ResolverType.RESOLVER_WINS.name());
        assertEquals("RESOLVER_BCAST", ResolverType.RESOLVER_BCAST.name());
        assertEquals("RESOLVER_DNS", ResolverType.RESOLVER_DNS.name());
        assertEquals("RESOLVER_LMHOSTS", ResolverType.RESOLVER_LMHOSTS.name());
    }

    /**
     * Tests the ordinal values of the enum constants.
     */
    @Test

from fastapi import FastAPI

app = FastAPI()


@app.post("/items/", status_code=201)
async def create_item(name: str):

        // header names must be lowercase.
        val name = headers.name(i).lowercase(Locale.US)
        if (name !in HTTP_2_SKIPPED_REQUEST_HEADERS ||
          name == TE &&
          headers.value(i) == "trailers"
        ) {
          result.add(Header(name, headers.value(i)))
        }
      }
      return result
    }

    /** Returns headers for a name value block containing an HTTP/2 response. */

app = FastAPI()

items = {"foo": {"name": "Fighters", "size": 6}, "bar": {"name": "Tenders", "size": 3}}


@app.put("/items/{item_id}")
async def upsert_item(
    item_id: str,
    name: Annotated[str | None, Body()] = None,
    size: Annotated[int | None, Body()] = None,
):
    if item_id in items:
        item = items[item_id]
        item["name"] = name
        item["size"] = size
        return item

	invalidTables := []string{"table name", "table \"name\"", "✅✅", "$table$"}

	for _, name := range validTables {
		if err := validatePsqlTableName(name); err != nil {
			t.Errorf("Should be valid: %s - %s", name, err)
		}
	}
	for _, name := range invalidTables {
		if err := validatePsqlTableName(name); err != errInvalidPsqlTablename {

        }
    }

    public void scriptedMetric(String name, ConditionOptionCall<ScriptedMetricAggregationBuilder> opLambda) {
        ScriptedMetricAggregationBuilder builder = regScriptedMetricA(name);
        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void topHits(String name, ConditionOptionCall<TopHitsAggregationBuilder> opLambda) {