MySQL数据库连接与切换操作在监控验证中的关键点是什么？

 import mysql.connector from mysql.connector import Error def create_connection(host_name, user_name, user_password, db_name):     connection = None     try:         connection = mysql.connector.connect(             host=host_name,             user=user_name,             passwd=user_password,             database=db_name         )         print("Connection to MySQL DB successful")     except Error as e:         print(f"The error '{e}' occurred")     return connection def switch_database(connection, new_db_name):     try:         # Switch to the new database         cursor = connection.cursor()         cursor.execute(f"USE {new_db_name}")         print(f"Switched to database: {new_db_name}")     except Error as e:         print(f"The error '{e}' occurred while switching database") def main():     # Database configuration     host_name = 'localhost'     user_name = 'your_username'     user_password = 'your_password'     db_name = 'original_db_name'     new_db_name = 'new_db_name'     # Create connection to the original database     connection = create_connection(host_name, user_name, user_password, db_name)     # Switch to the new database     if connection:         switch_database(connection, new_db_name) if __name__ == "__main__":     main()

代码块包含了以下步骤：

1、create_connection 函数用于创建到MySQL数据库的连接。

2、switch_database 函数用于切换当前连接到的数据库。

3、main 函数是程序的入口点，它配置数据库连接信息，创建连接，并切换到新的数据库。

请根据您的实际数据库配置替换your_username、your_password、original_db_name 和new_db_name，此代码块假设您已经安装了MySQL Connector/Python，如果没有安装，您需要先安装它，因为这是连接MySQL数据库所需的Python库。