<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def next(self):
 """ Returns the next sequence of results, given stride and n. """

        try:
            results = self._stride_buffer.pop()
        except (IndexError, AttributeError):
            self._rebuffer()
            results = self._stride_buffer.pop()
        if not results:
            raise StopIteration
        return results