code: def get_user(self, name):
          
          try:
              return self._user_manager.get(name)
          except exc.NotFound:
              raise exc.NoSuchDatabaseUser("No user by the name '%s' exists." %
                      name)
docs: Finds the user in this instance with the specified name, and
          returns a CloudDatabaseUser object. If no match is found, a
          NoSuchDatabaseUser exception is raised.