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

Primeiro, certifique-se de criar seu [ambiente virtual](../virtual-environments.md){.internal-link target=_blank}, ativá-lo e então instalar o pacote `pydantic-settings`:

<div class="termy">

```console
$ pip install pydantic-settings

package org.gradle.test

class GroovyClassWithConstants {
    static final int INT_CONST = 9
    public static final String STRING_CONST = 'some-string'
    static final Object OBJECT_CONST = new GroovyClassWithConstants()
    static final def BIG_DECIMAL_CONST = 1.02

    String ignored = 'ignore'
    final int ignored2 = 1001
    static def ignored3

 * with user-defined properties.
 *
 * <p>A {@code ValueGraph} built by this class has the following default properties:
 *
 * <ul>
 *   <li>does not allow self-loops
 *   <li>orders {@link ValueGraph#nodes()} in the order in which the elements were added (insertion
 *       order)
 * </ul>
 *
 * <p>{@code ValueGraph}s built by this class also guarantee that each collection-returning accessor

<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="logHelper"
		class="org.codelibs.fess.crawler.helper.impl.LogHelperImpl">
	</component>

from fastapi import FastAPI
from pydantic import BaseModel, EmailStr

app = FastAPI()


class UserIn(BaseModel):
    username: str
    password: str
    email: EmailStr
    full_name: str | None = None


# Don't do this in production!
@app.post("/user/")
async def create_user(user: UserIn) -> UserIn:

from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None


app = FastAPI()


@app.post("/items/")
async def create_item(item: Item):

 */
package jcifs;

import java.io.IOException;

/**
 * Base for all checked exceptions used by this library
 *
 * @author mbechler
 *
 */
public class CIFSException extends IOException {

    /**
     *
     */
    private static final long serialVersionUID = 7806460518865806784L;

    /**
     * Constructs a CIFS exception with no detail message.
     */

 * to provide consistent error handling within the Fess system for SSO-related
 * processing failures such as token validation errors, communication failures
 * with SSO providers, or configuration issues.
 */
public class SsoProcessException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new SSO process exception with the specified detailed message.
     *

import org.opensearch.env.Environment;
import org.opensearch.index.IndexSettings;
import org.opensearch.index.analysis.AbstractTokenFilterFactory;
import org.opensearch.index.analysis.Analysis;

public class StopTokenSuffixFilterFactory extends AbstractTokenFilterFactory {

    private final String[] stopwords;

    private final boolean ignoreCase;

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.smb1.smb1;

import java.io.UnsupportedEncodingException;

class SmbComNegotiate extends ServerMessageBlock {

    private static final String DIALECTS = "\u0002NT LM 0.12\u0000";

    SmbComNegotiate() {
        command = SMB_COM_NEGOTIATE;
        flags2 = DEFAULT_FLAGS2;
    }