python pymssql 连接返回错误值为字节集，如何显示为文本。

#源代码：连接返回错误值为字节集，如何显示为文本?

import pymssql
try:
    conn = pymssql.connect(server=".\SQLEXPRESS", user="sa", password="1230", database="master",timeout = 0,charset = 'GBK')
except Exception as e:
    print(type(e))
    print(dir(e))
    print (e)

gbk解码,.decode("gbk")