连接网站怎么连接数据库

import pymysql  # 数据库连接参数 db_config = {     'host': 'localhost',     'port': 3306,     'user': 'root',     'password': 'your_password',     'database': 'your_database' }  # 创建连接 connection = pymysql.connect(**db_config)  try:     # 创建游标对象     with connection.cursor() as cursor:         # 执行 SQL 查询         sql = "SELECT * FROM your_table"         cursor.execute(sql)         result = cursor.fetchall()         print(result) finally:     # 关闭连接     connection.close()