def get_rubric(self, rubric_id, **kwargs):
response = self._requester.request(<EOL>'<STR_LIT:GET>',<EOL>'<STR_LIT>' % (self.id, rubric_id),<EOL>_kwargs=combine_kwargs(**kwargs)<EOL>)<EOL>return Rubric(self._requester, response.json())<EOL>
Get a single rubric, based on rubric id.

:calls: `GET /api/v1/courses/:course_id/rubrics/:id \
<https://canvas.instructure.com/doc/api/rubrics.html#method.rubrics_api.show>`_

:param rubric_id: The ID of the rubric.
:type rubric_id: int
:rtype: :class:`canvasapi.rubric.Rubric`