python MS sql connection over IP

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SQL-Server

Python

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I'm trying to write python Script fetch data from ms sql over LAN using IP. I tried this connection string
{'DRIVER={SQL Server Native Client 10.0};Server=ip;port=port;Network Library=DBMSSOCN;Database=TEST;uid=id;pwd=pass;'}
And it doesn't seem to work.
http://stackoverflow.com/questions/7317195/mssql-in-python-2-7[^][ Link which i used]
Any help.
Thank you