// Streaming signature clients can have custom content-encoding such as
// `aws-chunked,gzip` here we need to only save `gzip`.
// For more refer http://docs.aws.amazon.com/AmazonS3/latest/API/sigv4-streaming.html
func trimAwsChunkedContentEncoding(contentEnc string) (trimmedContentEnc string) {
	if contentEnc == "" {
		return contentEnc
	}
	var newEncs []string
	for enc := range strings.SplitSeq(contentEnc, ",") {

 * and {@link java.net.InetAddress}. The name resolution mechanisms
 * used will systematically query all available configured resolution
 * services including WINS, broadcasts, DNS, and LMHOSTS. See
 * <a href="../../resolver.html">Setting Name Resolution Properties</a>
 * and the <code>jcifs.smb1.resolveOrder</code> property. Changing
 * jCIFS name resolution properties can greatly affect the behavior of
 * the client and may be necessary for proper operation.

                    TikaExtractor tikaExtractor = container.getComponent("tikaExtractor");
                    factory.addExtractor("text/plain", tikaExtractor);
                    factory.addExtractor("text/html", tikaExtractor);
                })//
                .singleton("httpClient", HcHttpClient.class)//
                .singleton("sitemapsResponseProcessor", SitemapsResponseProcessor.class)//

            bb.putShort((short) 34); // size
            bb.putShort((short) 1); // serverType
            bb.putShort((short) 2); // rflags
            bb.putShort((short) 10); // proximity
            bb.putShort((short) 300); // ttl
            bb.putShort((short) 20); // pathOffset
            bb.putShort((short) 24); // altPathOffset
            bb.putShort((short) 28); // nodeOffset

            // Add path string at offset 20 (8 + 20 = 28)

`@lru_cache` is part of `functools` which is part of Python's standard library, you can read more about it in the <a href="https://docs.python.org/3/library/functools.html#functools.lru_cache" class="external-link" target="_blank">Python docs for `@lru_cache`</a>.

## Recap { #recap }

⚠ 👜 👈 ⚙️ 🐩 🐍 🆎, 👁 🥉 (↩️ ❎ 🌖 🎓, 👨‍🎨, ♒️), **FastAPI** 🔜 📚 👷 👆.

/// info

🚥 👆 ⏪ 🚶 🔘 🌐 🔰 &amp; 👟 🔙 👀 🌅 🔃 🆎, 👍 ℹ <a href="https://mypy.readthedocs.io/en/latest/cheat_sheet_py3.html" class="external-link" target="_blank"> "🎮 🎼" ⚪️➡️ `mypy`</a>.

Content is a DOM node or a jQuery\n      if (this.config.html) {\n        if (!$(content).parent().is($element)) {\n          $element.empty().append(content)\n        }\n      } else {\n        $element.text($(content).text())\n      }\n\n      return\n    }\n\n    if (this.config.html) {\n      if (this.config.sanitize) {\n        content = sanitizeHtml(content, this.config.whiteList, this.config.sanitizeFn)\n      }\n\n      $element.html(content)\n    } else {\n      $element.text(content)\n ...

constraints.NotEmpty.message = {item}는 필수 항목입니다.
constraints.ParametersScriptAssert.message = 스크립트 표현식 "{script}"가 true가 아닙니다.
constraints.Range.message = {item}는 {min}에서 {max} 사이여야 합니다.
constraints.SafeHtml.message = {item}에 안전하지 않은 HTML 콘텐츠가 포함되어 있습니다.
constraints.ScriptAssert.message = 스크립트 표현식 "{script}"가 true가 아닙니다.
constraints.URL.message = {item}는 유효한 URL이 아닙니다.
constraints.Required.message = {item}가 필요합니다.
constraints.TypeInteger.message = {item}는 숫자여야 합니다.

例えば、以下のような`main.py`ファイルを用意します:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip

<a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> の第2引数は、デフォルトで返される値を指定します。

この引数を省略するとデフォルト値として`None`が返されますが、ここではデフォルト値として`"World"`を指定しています。

///

次に、このPythonプログラムを呼び出します。

そして、固定値のクラス属性を作ります。すると、その値が使用可能な値となります:

{* ../../docs_src/path_params/tutorial005.py hl[1,6,7,8,9] *}

/// info | 情報

<a href="https://docs.python.org/3/library/enum.html" class="external-link" target="_blank">Enumerations (もしくは、enums)はPython 3.4以降で利用できます</a>。

///

/// tip | 豆知識