pymssql 报错20002

pymssql._pymssql.OperationalError: 
(20002, b'DB-Lib error message 20002, severity 9:
nAdaptive Server connection failed (192.168.1.23)
DB-Lib error message 20002, severity 9:
Adaptive Server connection failed (192.168.1.23)')

解决：加上如下参数：　　tds_version='7.0'