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(40532, 'Cannot open server "1433D" requested by the login.  
The login failed.DB-Lib error message 20018, severity 20:\n
General SQL Server error: Check messages from the SQL Server\n
DB-Lib error message 20002, severity 9:\nAdaptive Server connection failed\n')

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import pymssql
conn = pymssql.connect(server='yourserver.database.chinacloudapi.cn', user='yourusername@yourserver', password='yourpassword', database='AdventureWorks')