code: def __init__(self, world_size):
      self._world_size = world_size
      self._cvar = threading.Condition()
  
imports: import enum
  import threading
  from cupyx.distributed import _klv_utils
label_desc: Use image node_id 1 to create a new _BarrierImpl object  with example: obj = _BarrierImpl(world_size)