assertEquals(new BigDecimal("1000"), BigDecimalConversionUtil.toBigDecimal(Long.valueOf(1000L)));

        assertEquals(0, new BigDecimal("0.1").compareTo(BigDecimalConversionUtil.toBigDecimal(Float.valueOf(0.1F))));

        assertEquals(0, new BigDecimal("0.1").compareTo(BigDecimalConversionUtil.toBigDecimal(Double.valueOf(0.1D))));

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


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


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):

O Python possui suporte para "dicas de tipo" ou "type hints" (também chamado de "anotações de tipo" ou "type annotations")

Esses **"type hints"** são uma sintaxe especial que permite declarar o <abbr title = "por exemplo: str, int, float, bool">tipo</abbr> de uma variável.

Ao declarar tipos para suas variáveis, editores e ferramentas podem oferecer um melhor suporte.

```Python hl_lines="2  7 8 9 10  23 24 25"
from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: bool = None


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str = None):

    @ValidateTypeFailure
    public Integer intervalTime;

    /**
     * The boost value for documents from this web configuration.
     */
    @Required
    @ValidateTypeFailure
    public Float boost;

    /**
     * Whether this web configuration is available for crawling.
     */
    @Required
    @Size(max = 5)
    public String available;

    /**

                            <la:message key="labels.crawling_info_title_confirm"/>
                        </h1>
                    </div>
                    <div class="col-sm-6">
                        <ol class="breadcrumb float-sm-right">
                            <li class="breadcrumb-item"><la:link href="/admin/crawlinginfo">
                                <la:message key="labels.crawling_info_link_top"/>
                            </la:link></li>

pkg p1, const ConstChase2 = 11
pkg p1, const ConstChase2 ideal-int
pkg p1, const ConversionConst = 5
pkg p1, const ConversionConst MyInt
pkg p1, const FloatConst = 1.5  // 3/2
pkg p1, const FloatConst ideal-float
pkg p1, const StrConst = "foo"
pkg p1, const StrConst ideal-string
pkg p1, func Bar(int8, int16, int64)
pkg p1, func Bar1(int8, int16, int64) uint64
pkg p1, func Bar2(int8, int16, int64) (uint8, uint64)

# | INTEGER       | java.lang.Integer    | int?          |
# | BIGINT        | java.lang.Long       | long?         |
# | REAL          | java.math.BigDecimal | decimal?      |
# | FLOAT         | java.math.BigDecimal | decimal?      |
# | DOUBLE        | java.math.BigDecimal | decimal?      |
# | DATE          | java.util.Date       | DateTime?     |
# | TIME          | java.sql.Time        | DateTime?     |

        ComponentUtil.register(queryProcessor, "queryProcessor");

        queryCommand = new QueryCommand() {
            @Override
            public QueryBuilder execute(QueryContext context, Query query, float boost) {
                return null;
            }

            @Override
            protected String getQueryClassName() {
                return null;
            }
        };
    }

এই **"টাইপ হিন্ট"** বা অ্যানোটেশনগুলি এক ধরণের বিশেষ <abbr title="সিনট্যাক্স হল প্রোগ্রামিং ভাষায় কোড লেখার নিয়ম ও গঠন।">সিনট্যাক্স</abbr> যা একটি ভেরিয়েবলের <abbr title="যেমন: str, int, float, bool">টাইপ</abbr> ঘোষণা করতে দেয়।

ভেরিয়েবলগুলির জন্য টাইপ ঘোষণা করলে, এডিটর এবং টুলগুলি আপনাকে আরও ভালো সাপোর্ট দিতে পারে।