* O mesmo com `app/routers/users.py`,  ele é outro submódulo: `app.routers.users`.
* Há também um subdiretório `app/internal/` com outro arquivo `__init__.py`, então ele é outro "subpacote Python":`app.internal`.
* E o arquivo `app/internal/admin.py` é outro submódulo: `app.internal.admin`.

<img src="/img/tutorial/bigger-applications/package.drawio.svg">

A mesma estrutura de arquivos com comentários:

```
.

 *  limitations under the License.
 */
package okhttp3.internal.tls

import java.security.cert.CertificateParsingException
import java.security.cert.X509Certificate
import java.util.Locale
import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLException
import javax.net.ssl.SSLSession
import okhttp3.internal.canParseAsIpAddress
import okhttp3.internal.toCanonicalHost
import okio.utf8Size

/**

import java.util.concurrent.Callable
import java.util.concurrent.Executors
import kotlin.test.assertFailsWith
import okhttp3.TestUtil.threadFactory
import okhttp3.internal.cache2.Relay.Companion.edit
import okhttp3.internal.cache2.Relay.Companion.read
import okio.Buffer
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import okio.Pipe
import okio.Source
import okio.buffer
import okio.source

 * limitations under the License.
 */
package okhttp3.internal.platform.android

import android.os.Build
import java.lang.reflect.InvocationTargetException
import java.lang.reflect.Method
import javax.net.ssl.SSLSocket
import okhttp3.Protocol
import okhttp3.internal.platform.AndroidPlatform
import okhttp3.internal.platform.Platform

/**

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.internal.smb1.com;

import jcifs.Decodable;
import jcifs.Encodable;
import jcifs.internal.SMBProtocolDecodingException;
import jcifs.internal.util.SMBUtil;

/**
 * Represents a byte range for SMB1 locking and unlocking operations.
 *

import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.TestUtil.assertSuppressed
import okhttp3.internal.DoubleInetAddressDns
import okhttp3.internal.connection.RealConnection
import okhttp3.internal.connection.RealConnection.Companion.IDLE_CONNECTION_HEALTHY_NS
import okhttp3.internal.http.RecordingProxySelector
import okhttp3.testing.Flaky
import okhttp3.testing.PlatformRule
import okio.BufferedSink

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.http2

import okhttp3.internal.http2.flowcontrol.WindowCounter

interface FlowControlListener {
  /**
   * Notification that the receiving stream flow control window has changed.

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.platform

import assertk.assertThat
import assertk.assertions.isEqualTo
import okhttp3.internal.platform.Platform.Companion.isAndroid
import okhttp3.testing.PlatformRule
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.internal.smb1.trans.nt;

import jcifs.Configuration;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * SMB1 NT Transaction subcommand for querying security descriptors.
 *

Pero en casos reales, al implementar seguridad, obtendrías más beneficios usando las [Utilidades de Seguridad integradas (el próximo capítulo)](../security/index.md){.internal-link target=_blank}.

///

## Errores de dependencias y valores de retorno

Puedes usar las mismas *funciones* de dependencia que usas normalmente.

### Requisitos de dependencia