import ssl
import ldap3

server = ldap3.Server(host='domaincontroller.example.com', port=636,
                      use_ssl=True, tls=tls_configuration,
                      get_info=ldap3.ALL)
con = ldap3.Connection(server, version=3,
                       auto_bind=True,
                       raise_exceptions=True,
                       user='EXAMPLE\username',
                       password='MySecret',
                       authentication=ldap3.NTLM)