例如，如果你有一个函数：

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

你的程序可能会像这样执行：

```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")
        function ->> execute: 执行函数代码

* Use the `templates` you created to render and return a `TemplateResponse`, pass the name of the template, the request object, and a "context" dictionary with key-value pairs to be used inside of the Jinja2 template.

{* ../../docs_src/templates/tutorial001_py310.py hl[4,11,15:18] *}

/// note

Before FastAPI 0.108.0, Starlette 0.29.0, the `name` was the first parameter.

	loggerOnce logger.LogOnce
	quitCh     chan struct{}
}

// ID - returns target ID.
func (target *NSQTarget) ID() event.TargetID {
	return target.id
}

// Name - returns the Name of the target.
func (target *NSQTarget) Name() string {
	return target.ID().String()
}

// Store returns any underlying store if set.
func (target *NSQTarget) Store() event.TargetStore {
	return target.store
}

        private final String name;
        private final long size;
        private final long lastModified;
        private final boolean isDirectory;
        private final long attributes;
        private final long creationTime;
        private final long lastAccessTime;
        
        public FileInfo(String name, SmbFileAttributes attrs) {
            this.name = name;
            this.size = attrs.getSize();

        SuggestCreator.Options options = new SuggestCreator.Options();
        options.sessionId = "test-session";
        options.name = "test-name";
        options.propertiesPath = "/path/to/props";

        String expected = "Options [sessionId=test-session, name=test-name, propertiesPath=/path/to/props]";
        assertEquals(expected, options.toString());
    }

    // Test initializeProbes
    @Test

The specified file must be a Go assembly file.
The same assembler is used for all target operating systems and architectures.
The GOOS and GOARCH environment variables set the desired target.

Flags:

	-D name[=value]
		Predefine symbol name with an optional simple value.
		Can be repeated to define multiple symbols.
	-I dir1 -I dir2
		Search for #include files in dir1, dir2, etc,
		after consulting $GOROOT/pkg/$GOOS_$GOARCH.
	-S

     * @param ctx the CIFS context
     * @param name the DFS path to resolve
     * @param targetHost the target host name
     * @param targetDomain the target domain
     * @param rn the referral number
     * @return dfs referral
     * @throws SmbException if an SMB error occurs
     * @throws CIFSException if a CIFS error occurs
     */

     * If {@code element} is not {@code null}, child configuration element with the specified name will
     * be unmarshalled.
     *
     * @param configuration The configuration to unmarshal, may be {@code null}.
     * @param element Configuration element name to unmarshal or {@code null} to unmarshal entire configuration.
     * @return This request for chaining, never {@code null}.
     */

            {
                "required": False,
                "schema": {
                    "anyOf": [{"type": "string"}, {"type": "null"}],
                    "title": "P",
                },
                "name": "p",
                "in": "header",
            }
        ]
    )


@pytest.mark.parametrize(
    "path",
    ["/optional-str", "/model-optional-str"],
)
def test_optional_str_missing(path: str):

        logger.info("Filtered logs by job name: {}", logs);

        // Verify all returned logs contain the search term in job name
        for (Map<String, Object> log : logs) {
            String jobName = log.get("job_name").toString();
            assertTrue(jobName.contains(NAME_PREFIX), "Job name should contain '" + NAME_PREFIX + "'");
        }