171 class _CnxSetPool(_BaseCnxSet):

   171 class _CnxSetPool(_BaseCnxSet):

   172 

   172 

   173     def __init__(self, source, size):

   173     def __init__(self, source, size):

   174         super().__init__(source)

   174         super().__init__(source)

   175         self._cnxsets = []

   175         self._cnxsets = []

   177 

   177 

   178         for i in range(size):

   178         for i in range(size):

   179             self._queue.put_nowait(self._new_cnxset())

   179             self._queue.put_nowait(self._new_cnxset())

   180 

   180 

   181     def _new_cnxset(self):

   181     def _new_cnxset(self):