需要帮助对从python函数返回的Mysql结果进行舍入

import mysql.connector

def get_mysql_result():
    # 连接MySQL数据库
    cnx = mysql.connector.connect(user='username', password='password',
                                  host='localhost', database='database_name')
    cursor = cnx.cursor()

    # 执行查询语句
    query = "SELECT column_name FROM table_name"
    cursor.execute(query)

    # 获取查询结果
    result = cursor.fetchone()[0]

    # 关闭数据库连接
    cursor.close()
    cnx.close()

    return result

# 获取MySQL结果并进行舍入
mysql_result = get_mysql_result()
rounded_result = round(mysql_result, 2)  # 保留两位小数

print(rounded_result)