{* ../../docs_src/python_types/tutorial010.py hl[6] *}


然后，你将再次获得所有的编辑器支持：

<img src="https://fastapi.tiangolo.com/img/python-types/image06.png">

## Pydantic 模型

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> 是一个用来执行数据校验的 Python 库。

你可以将数据的"结构"声明为具有属性的类。

每个属性都拥有类型。

接着你用一些值来创建这个类的实例，这些值会被校验，并被转换为适当的类型（在需要的情况下），返回一个包含所有数据的对象。

然后，你将获得这个对象的所有编辑器支持。

from typing import Annotated

from fastapi import Body, FastAPI
from pydantic import BaseModel, Field

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = Field(
        default=None, title="The description of the item", max_length=300
    )
    price: float = Field(gt=0, description="The price must be greater than zero")
    tax: float | None = None


@app.put("/items/{item_id}")

from typing import Union

from fastapi import Depends, FastAPI

app = FastAPI()


fake_items_db = [{"item_name": "Foo"}, {"item_name": "Bar"}, {"item_name": "Baz"}]


class CommonQueryParams:
    def __init__(self, q: Union[str, None] = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")
async def read_items(commons=Depends(CommonQueryParams)):

/**
 * SMB protocol utility class providing low-level data encoding and decoding operations.
 * Contains methods for reading and writing various data types (integers, strings, timestamps)
 * in SMB protocol format, handling endianness and data type conversions.
 *
 * @author mbechler
 */
public class SMBUtil {

    /**
     * Private constructor to prevent instantiation of utility class.
     */
    private SMBUtil() {
    }

/**
 * Assists in resolving the dependencies of a plugin. <strong>Warning:</strong> This is an internal utility class that
 * is only public for technical reasons, it is not part of the public API. In particular, this class can be changed or
 * deleted without prior notice.
 *
 * @since 3.0
 */
@Named
@Singleton
public class DefaultPluginDependenciesResolver implements PluginDependenciesResolver {

import org.w3c.dom.EntityReference;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;

/**
 * Utility class for DOM operations.
 *
 * @author higa
 */
public abstract class DomUtil {

    /**
     * Do not instantiate.
     */
    protected DomUtil() {
    }

    /**

* <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#responses-object" class="external-link" target="_blank">Objeto de Responses de OpenAPI</a>, incluye el `Response Object`.

import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin failure URL.
 *
 */
public class ApiAdminFailureurlAction extends FessApiAdminAction {

    private static final Logger logger = LogManager.getLogger(ApiAdminFailureurlAction.class);

    // ===================================================================================

import org.codelibs.fess.util.ComponentUtil;

/**
 * A matcher class for applying document boost values based on configurable expressions.
 * This class evaluates match and boost expressions against document data to determine
 * if a document should receive a boost and what boost value to apply. It supports
 * script-based expressions for flexible document scoring.
 *
 */
public class DocBoostMatcher {

import org.codelibs.fess.suggest.util.SuggestUtil;
import org.opensearch.transport.client.Client;

/**
 * Builder class for creating instances of {@link Suggester}.
 * This class allows for the configuration of various components used by the {@link Suggester}.
 */
public class SuggesterBuilder {
    /**
     * Constructs a new {@link SuggesterBuilder}.
     */
    public SuggesterBuilder() {
        // nothing