docstr: Return the number of processes in this group.
docstr_tok: ["Return","the","number","of","processes","in","this","group","."]
code: def world_size(self):
      """Return the number of processes in this group."""
      return self._world_size
  
file_path: ray/python/ray/util/collective/collective_group/base_collective_group.py
imports: from abc import ABCMeta
  from abc import abstractmethod
  from ray.util.collective.types import AllReduceOptions, BarrierOptions, ReduceOptions, AllGatherOptions, BroadcastOptions, ReduceScatterOptions
label_desc: Use image node_id 3 for calling the BaseGroup obj's underlying member method code with example usage: obj.world_size() and returns: self