print(f"Hi {name}!")
```

在 `typing` 中也有用 `Optional` 宣告某個值可以是 `None` 的速記法。

以下是我個人（非常主觀）的建議：

* 🚨 避免使用 `Optional[SomeType]`
* 改為 ✨ 使用 `Union[SomeType, None]` ✨。

兩者等價且底層相同，但我會推薦用 `Union` 而不要用 `Optional`，因為「optional」這個詞看起來會讓人以為這個值是可選的，但實際上它的意思是「可以是 `None`」，即使它不是可選的、仍然是必填。

我認為 `Union[SomeType, None]` 更能清楚表達其含義。

這只是措辭與命名問題，但這些詞會影響你與團隊成員對程式碼的理解。

例如，看看下面這個函式：

```python
from typing import Optional

        private boolean extended = false;
        private int fileType = 0;

        public TestSmbComNTCreateAndXResponse(Configuration config, boolean extended, int fileType) {
            super(config);
            this.extended = extended;
            this.fileType = fileType;
        }

        // Use setter methods to configure extended and fileType in parent class

     * Get a pipe resource
     *
     * @param url the URL of the SMB pipe resource
     * @param pipeType
     *            the type of the pipe
     * @return the SMB pipe resource at the specified location
     * @throws CIFSException if the pipe resource cannot be accessed
     */
    SmbPipeResource getPipe(String url, int pipeType) throws CIFSException;

    /**

    Object lock;

    TransactNamedPipeInputStream(final SmbNamedPipe pipe) throws SmbException, MalformedURLException, UnknownHostException {
        super(pipe, pipe.pipeType & 0xFFFF00FF | SmbFile.O_EXCL);
        this.dcePipe = (pipe.pipeType & SmbNamedPipe.PIPE_TYPE_DCE_TRANSACT) != SmbNamedPipe.PIPE_TYPE_DCE_TRANSACT;
        lock = new Object();
    }

    @Override
    public int read() throws IOException {

	switch cfg.Version {
	case "29":
		// V29 -> V30
		cfg.Compression.Enabled = false
		cfg.Compression.Extensions = strings.Split(compress.DefaultExtensions, config.ValueSeparator)
		cfg.Compression.MimeTypes = strings.Split(compress.DefaultMimeTypes, config.ValueSeparator)
	case "30":
		// V30 -> V31
		cfg.OpenID = openid.Config{}
		cfg.Policy.OPA = opa.Args{
			URL:       &xnet.URL{},
			AuthToken: "",
		}

        Map<String, String> queryMap = facetQueryView.getQueryMap();

        // Should have original non-filetype queries
        assertEquals("field:value", queryMap.get("label2"));
        assertEquals("anotherfield:anothervalue", queryMap.get("label3"));

        // Should have filetype queries
        assertEquals("filetype:html", queryMap.get("label1"));

	}
}

func enableCompression(t *testing.T, encrypt bool, mimeTypes []string, extensions []string) {
	// Enable compression and exec...
	globalCompressConfigMu.Lock()
	globalCompressConfig.Enabled = true
	globalCompressConfig.MimeTypes = mimeTypes
	globalCompressConfig.Extensions = extensions
	globalCompressConfig.AllowEncrypted = encrypt
	globalCompressConfigMu.Unlock()

        // Test different pipe types
        int[] pipeTypes = { 0, 1, 2 };

        for (int pipeType : pipeTypes) {
            // When
            SmbPipeResource pipe = context.getPipe("smb://server/IPC$/pipe", pipeType);

            // Then
            assertNotNull(pipe, "Should create pipe resource for type: " + pipeType);
        }
    }

    @Test

    public static final String AS_EPQ = "epq";

    /** The parameter for query. */
    public static final String AS_Q = "q";

    /** The parameter for filetype. */
    public static final String AS_FILETYPE = "filetype";

    /** The parameter for sitesearch. */
    public static final String AS_SITESEARCH = "sitesearch";

    /** The parameter for occurrence. */

        queryCommand = new TestQueryCommand();
        queryFieldConfig = ComponentUtil.getQueryFieldConfig();

        // Set up search fields
        String[] searchFields = { "title", "content", "url", "host", "filetype" };
        queryFieldConfig.setSearchFields(searchFields);
    }

    /**
     * Test isSearchField() with Set-based lookup.
     */
    @Test
    public void test_isSearchField_withSetBasedLookup() {