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import pymysql
def connect_db():
# 数据库连接参数
db_host = 'localhost' # 数据库主机名
db_user = 'root' # 数据库用户名
db_password = '123456' # 数据库密码
db_database = 'user_info' # 数据库名
db_port = 3306 # 数据库端口，通常默认为3306
# 创建连接
connection = pymysql.connect(host=db_host,
user=db_user,
password=db_password,
database=db_database,
port=db_port)
cursor = connection.cursor()
return cursor
if __name__ == '__main__':
cursor = connect_db()
print("数据库连接成功！")
