update discount for contacts

import xmlrpclib

server = xmlrpclib.ServerProxy( "http://0.0.0.0:8069/xmlrpc/object" )
db_name = "neu8_20170418"
db_password = "neu$724"

log_file = ('CONTACTS.log')

parent_ids = server.execute(db_name, 1, db_password, 'res.partner', 'search',
                            [['is_company', '=', True], ['customer', '=', True], ['parent_id', '=', False],
                             ['partner_discount', '!=', False]])
updated_contacts = []
if parent_ids:
    parent_ids_read = server.execute(db_name, 1, db_password, 'res.partner', 'read',  parent_ids, ['id','partner_discount'])
    for parent in parent_ids_read:
        parent_discount = parent['partner_discount'][0]
        print "********** parent_discount, parent['id']: ", parent_discount, parent['id']
        contact_ids = server.execute(db_name, 1, db_password, 'res.partner', 'search', [['parent_id', '=', parent['id']]])
        if contact_ids:
            server.execute(db_name, 1, db_password, 'res.partner', 'write', contact_ids, {'partner_discount': parent_discount})
            print "    ################# contact_ids",contact_ids
            updated_contacts.append(contact_ids)

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