cx_Oracle & Connecting to Oracle DB Remotely

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I like to do it this way:

ip = '192.168.0.1'
port = 1521
SID = 'YOURSIDHERE'
dsn_tns = cx_Oracle.makedsn(ip, port, SID)

db = cx_Oracle.connect('username', 'password', dsn_tns)

One of the main reasons I like this method is that I usually have a TNSNAMES.ORA file lying around someplace, and I can check that the dsn_tns object will do the right thing by doing: 

print dsn_tns

and comparing the output to my TNSNAMES.ORA

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