def get_group_category(self, category):
category_id = obj_or_id(category, "<STR_LIT>", (GroupCategory,))<EOL>response = self.__requester.request(<EOL>'<STR_LIT:GET>',<EOL>'<STR_LIT>'.format(category_id)<EOL>)<EOL>return GroupCategory(self.__requester, response.json())<EOL>
Get a single group category.

:calls: `GET /api/v1/group_categories/:group_category_id \
<https://canvas.instructure.com/doc/api/group_categories.html#method.group_categories.show>`_

:param category: The object or ID of the category.
:type category: :class:`canvasapi.group.GroupCategory` or int

:rtype: :class:`canvasapi.group.GroupCategory`