class_docstr: A thread that propagates the exception to the main thread
class_docstr_tok: ["A","thread","that","propagates","the","exception","to","the","main","thread"]
code: def join(self, timeout=None):
      super(PropagatingThread, self).join(timeout)
      if self.exc:
          raise self.exc
      return self.ret
  
imports: from typing import Hashable
  import json
  import signal
  import threading
  import traceback
  import os
  import numpy
  import tvm
  from tvm import rpc
  from tvm.tir import expr
  from tvm.tir.transform import Simplify
  from tvm.ir.transform import Sequential
  from ..te import Tensor, placeholder
label_desc: Use image node_id 2 for calling the PropagatingThread obj's underlying member method code with example usage: obj.join(timeout) and returns: self