mysql怎么修改数据库连接数据库

import mysql.connector

# 原始连接配置
config = {
    'user': 'old_user',
    'password': 'old_password',
    'host': '127.0.0.1',
    'database': 'old_db',
    'raise_on_warnings': True
}

# 修改后的连接配置
new_config = {
    'user': 'new_user',
    'password': 'new_password',
    'host': 'new_host',
    'database': 'new_db',
    'raise_on_warnings': True
}

try:
    # 尝试连接原始配置
    cnx = mysql.connector.connect(**config)
    print("Original connection successful")
except mysql.connector.Error as err:
    print(f"Original connection error: {err}")
    print("Trying new configuration...")
    
    try:
        # 尝试连接新配置
        cnx = mysql.connector.connect(**new_config)
        print("New connection successful")
    except mysql.connector.Error as err:
        print(f"New connection error: {err}")