code: def get_key(self, id):
          
          assert isinstance(id, (int, long)), id
          headers, data = self._requester.requestJsonAndCheck(
              "GET",
              "/user/keys/" + str(id)
          )
          return github.UserKey.UserKey(self._requester, headers, data, completed=True)
docs: :calls: `GET /user/keys/:id <http://developer.github.com/v3/users/keys>`_
          :param id: integer
          :rtype: :class:`github.UserKey.UserKey`