Hi Ramkumar,

Your endpoint configurations are wrong. In V11 & V12 they're no longer under /xmlrpc.client/2/common but under /xmlrpc/2/common
Here's a working example:

from xmlrpc import client as xmlrpclib
url = 'http://127.0.0.1:12000'
db = 'your_database'
username = 'admin'
password = 'admin'

common = xmlrpclib.ServerProxy('{}/xmlrpc/2/common'.format(url))
models = xmlrpclib.ServerProxy('{}/xmlrpc/2/object'.format(url))

uid = common.login(db, username, password)
result = models.execute(db, uid, password, 'res.partner', 'search_read', [['id', '=', 1]])
number_of_customers = models.execute(db, uid, password, 'res.partner', 'search_count', [])
print('Number of customers: ' + str(number_of_customers))
print('result: ' + str(result[0].get('name')))

Regards,

Yenthe