### Установка `pydantic-settings` { #install-pydantic-settings }

Сначала убедитесь, что вы создали [виртуальное окружение](../virtual-environments.md){.internal-link target=_blank}, активировали его, а затем установили пакет `pydantic-settings`:

<div class="termy">

```console
$ pip install pydantic-settings

	}

	// Delete the event from store.
	return target.store.Del(key)
}

// Close - closes underneath connections to PostgreSQL database.
func (target *PostgreSQLTarget) Close() error {
	close(target.quitCh)
	if target.updateStmt != nil {
		// FIXME: log returned error. ignore time being.
		_ = target.updateStmt.Close()
	}

	if target.deleteStmt != nil {
		// FIXME: log returned error. ignore time being.

* <a href="https://github.com/OAI/OpenAPI-Specification" class="external-link" target="_blank"><strong>OpenAPI</strong></a> for API creation, including declarations of <abbr title="also known as: endpoints, routes">path</abbr> <abbr title="also known as HTTP methods, as POST, GET, PUT, DELETE">operations</abbr>, parameters, request bodies, security, etc.

<%@page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8"%>
<%-- query did not match any document --%>
<div id="result" class="row">
	<div class="col-md-8 alert alert-info">
		<la:message key="labels.did_not_match" arg0="${displayQuery}" />
	</div>
	<div class="col-md-4"><%-- Side Content --%></div>

/**
 * Admin action for Key Match management.
 *
 */
public class AdminKeymatchAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminKeymatchAction() {
        super();
    }

    /** The role name for key match administration. */
    public static final String ROLE = "admin-keymatch";

    /** Logger for this class. */

      this.uncaughtThrowable = uncaught;
    }
  }

  private static class Request {
    final String methodName;
    final Object[] arguments;

    Request(String methodName, Object[] arguments) {
      this.methodName = checkNotNull(methodName);
      this.arguments = checkNotNull(arguments);
    }
  }

  private static class Response {
    final String methodName;
    final Object result;

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console
// Podrías crear una env var MY_NAME con
$ export MY_NAME="Wade Wilson"

// Luego podrías usarla con otros programas, como
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
// Crea una env var MY_NAME

import jcifs.dcerpc.ndr.NdrException;
import jcifs.dcerpc.ndr.NdrObject;

/**
 * Server Service RPC interface implementation for remote server administration
 */
@SuppressWarnings("all")
public class srvsvc {

    /**
     * Private constructor to prevent instantiation.
     */
    private srvsvc() {
    }

    /**
     * Gets the RPC interface syntax string.

 * transformation in which case {@code x} has a constant value for all {@code y}. In the
 * non-vertical case, {@code m} is the slope of the transformation (and a horizontal transformation
 * has zero slope).
 *
 * @author Pete Gillin
 * @since 20.0
 */
@J2ktIncompatible
@GwtIncompatible
public abstract class LinearTransformation {
  /**
   * Constructor for use by subclasses inside Guava.

        mSession.setSession(iSession);

        SessionScope sessionScope = getContainer().lookup(SessionScope.class);
        sessionScope.enter();
        sessionScope.seed(MavenSession.class, mSession);
        sessionScope.seed(Session.class, iSession);
        sessionScope.seed(InternalMavenSession.class, InternalMavenSession.from(iSession));
    }

    protected MavenProject createStubMavenProject() {