docstr: Inits observer class
code: def __init__(self):
      r"""
      Inits observer class
      """
      self.id = rpc.get_worker_info().id
  
file_path: pytorch/benchmarks/distributed/rpc/rl/observer.py
imports: import random
  import time
  import torch
  import torch.distributed.rpc
  from agent import AgentBase
  from torch.distributed.rpc import rpc_sync
label_desc: Use image node_id 1 to create a new ObserverBase object  with example: obj = ObserverBase()