code: def find(self, objects):
          
          matches = list(self.__call__(objects))
          if not matches:
              raise exceptions.NoMatchesError(objects, self.tests)
          elif len(matches) > 1:
              raise exceptions.MultipleMatchesError(objects, self.tests,
                                                    matches=matches)
          return matches[0]
docs: Find exactly one match in the list of objects.
  
          :param objects: objects to filter
          :type objects: :class:`list`
          :return: the one matching object
          :raises groupy.exceptions.NoMatchesError: if no objects match
          :raises groupy.exceptions.MultipleMatchesError: if multiple objects match