设置不带尾随零的浮点数的格式

import decimal

# 使用Decimal来避免浮点数的精度问题
num = decimal.Decimal('123.4500')
formatted_num = format(num, 'f').rstrip('0').rstrip('.') if '.' in format(num, 'f') else format(num, 'f')
print(formatted_num)  # 输出: 123.45

function removeTrailingZeros(num) {
    return parseFloat(num.toString()).toString();
}

let num = 123.4500;
console.log(removeTrailingZeros(num));  // 输出: 123.45

public class Main {
    public static void main(String[] args) {
        double num = 123.4500;
        System.out.println(removeTrailingZeros(num));  // 输出: 123.45
    }

    public static String removeTrailingZeros(double num) {
        return new BigDecimal(Double.toString(num)).stripTrailingZeros().toPlainString();
    }
}