from fastapi import Depends, FastAPI, Security
from fastapi.security import APIKeyHeader
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

api_key = APIKeyHeader(name="key")


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(api_key)):
    user = User(username=oauth_header)
    return user


@app.get("/users/me")

from fastapi import Depends, FastAPI, Security
from fastapi.security import APIKeyHeader
from fastapi.testclient import TestClient
from pydantic import BaseModel

app = FastAPI()

api_key = APIKeyHeader(name="key", description="An API Key Header")


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(api_key)):
    user = User(username=oauth_header)
    return user

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components>
	<include path="convention.xml"/>
    <component name="pagerCreator" class="org.codelibs.fess.mylasta.creator.PagerCreator"/>

        SMBUtil.writeInt4(nextOffset, buffer, 0);

        // Write action (4 bytes)
        SMBUtil.writeInt4(action, buffer, 4);

        // Write file name length (4 bytes)
        SMBUtil.writeInt4(fileNameBytes.length, buffer, 8);

        // Write file name
        System.arraycopy(fileNameBytes, 0, buffer, 12, fileNameBytes.length);

        return buffer;
    }

	loggerOnce logger.LogOnce
	quitCh     chan struct{}
}

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

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

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

Параметр `name` определён как `Optional[str]`, но он **не необязательный** — вы не можете вызвать функцию без этого параметра:

```Python
say_hi()  # О нет, это вызывает ошибку! 😱
```

Параметр `name` всё ещё **обязателен** (не *optional*), потому что у него нет значения по умолчанию. При этом `name` принимает `None` как значение:

```Python
say_hi(name=None)  # Это работает, None допустим 🎉
```

    /** Path to lmhosts file for NetBIOS name resolution */
    protected String lmhostsFilename;
    /** Array of WINS server addresses for NetBIOS name resolution */
    protected InetAddress[] winsServer = {};
    /** Broadcast address for NetBIOS name resolution */
    protected InetAddress broadcastAddress;
    /** Order of name resolution methods to use */
    protected List<ResolverType> resolverOrder;

{
    "properties": {
      "name": {
        "type": "keyword"
      },
      "target": {
        "type": "keyword"
      },
      "cronExpression": {
        "type": "keyword"
      },
      "scriptType": {
        "type": "keyword"
      },
      "scriptData": {
        "type": "keyword"
      },
      "crawler": {
        "type": "boolean"
      },
      "jobLogging": {
        "type": "boolean"
      },

     * 6 - disconnected/invalid
     */
    /**
     * Current state of the transport connection
     */
    protected volatile int state = 0;

    /**
     * Name identifier for this transport instance
     */
    protected String name = "Transport" + id++;
    private volatile Thread thread;
    private volatile TransportException te;

    /**
     * Lock object for synchronizing input operations
     */

func (e BucketNameInvalid) Error() string {
	return "Bucket name invalid: " + e.Bucket
}

// Object related errors.

// ObjectNameInvalid - object name provided is invalid.
type ObjectNameInvalid GenericError

// ObjectNameTooLong - object name too long.
type ObjectNameTooLong GenericError

// ObjectNamePrefixAsSlash - object name has a slash as prefix.
type ObjectNamePrefixAsSlash GenericError