def __getitem__(self, key):
        """Support skip and limit using getitem and slicing syntax.
        """
        # Slice provided
        if isinstance(key, slice):
            try:
                self._cursor_obj = self._cursor[key]
                self._skip, self._limit = key.start, key.stop
            except __HOLE__, err:
                # PyMongo raises an error if key.start == key.stop, catch it,
                # bin it, kill it. 
                start = key.start or 0
                if start >= 0 and key.stop >= 0 and key.step is None:
                    if start == key.stop:
                        self.limit(0)
                        self._skip, self._limit = key.start, key.stop - start
                        return self
                raise err
            # Allow further QuerySet modifications to be performed
            return self
        # Integer index provided
        elif isinstance(key, int):
            return self._document(**dict_keys_to_str(self._cursor[key]))
dataset/ETHPy150Open aparo/django-elasticsearch/django_elasticsearch/manager.py/QuerySet.__getitem__