code: def create_gist(self, description, files, public=True):
          
          new_gist = {'description': description, 'public': public,
                      'files': files}
          url = self._build_url('gists')
          json = self._json(self._post(url, data=new_gist), 201)
          return Gist(json, self) if json else None
docs: Create a new gist.
  
          If no login was provided, it will be anonymous.
  
          :param str description: (required), description of gist
          :param dict files: (required), file names with associated dictionaries
              for content, e.g. ``{'spam.txt': {'content': 'File contents
              ...'}}``
          :param bool public: (optional), make the gist public if True
          :returns: :class:`Gist <github3.gists.Gist>`