#!c:/python27/python.exe
# coding: utf8
import cx_Oracle

con = cx_Oracle.connect('user/pwd@localhost/xe')

source_db = con.cursor()
source_db.execute("select unit_type from unit_type where id_unit_type=56")
result = source_db.fetchall()

for item in result:
    print(item)


source_db.execute("commit")
source_db.close()
con.close()