# -*- coding: utf-8 -*-    import pyodbc
import cx_Oracleclass Database:def __init__(self, driver, server, database, username, password):"""链接数据库:param driver:  数据库驱动:param server: 地址:端口:param database: 数据库名称:param username: 用户名:param password: 密码"""self.driver = driverself.database = databaseif self.database.upper() == '数据库':self.server = "地址:端口"self.username = "用户名"self.password = "密码"else:self.server = serverself.database = databaseself.username = usernameself.password = passwordself.connection = Noneself.cursor = Nonedef prepare(self, query):"""准备查询语句"""try:self.cursor.prepare(query)except Exception as e:print(f"准备查询语句时发生错误: {e}")def connect(self):"""连接数据库"""try:if self.driver == "ODBC Driver 17 for SQL Server":self.connection = pyodbc.connect(f"DRIVER={{{self.driver}}};SERVER={self.server};DATABASE=