import sys;
import cx_Oracle;

def getConnectString( user_name, password, db_name ):
    return userName + "/" + password + "@" + dbName

sql = \
    "select * \n" \
    "  from idst0.rydm_t"

userName = "dataex"
password = "cpic123456"
dbName = "10.39.0.86/xmcx1"

conn = cx_Oracle.connect( getConnectString(userName,password,dbName) )

curs = conn.cursor()
result = curs.execute(sql)
row = curs.fetchone()
print( row )

curs.close()
conn.close()