1. Install Python3.x
2. Install Python module cx_Oracle
3. Download instantclient and unzip it
https://www.oracle.com/technetwork/topics/winsoft-085727.html
4. Add path of instantclient to environment
5. Copy and move files(oci.dll, oraocci**.dll, oraociei**.dll) from instantclient to site-packages of python
6. Run your code similar as below:
import cx_Oracle
cx_Oracle.connect(’%s/%s@%s:%s/%s’ % (user,pwd,ip,port,server))