class_docstr: A pair of RPC tracker/server running locally
  
  Parameters
  ----------
  tracker_host : str
      The host URL of the tracker
  tracker_port : int
      The port of the tracker
  tracker_key: str
      The key used in the tracker to refer to a worker
class_docstr_tok: ["A","pair","of","RPC","tracker\/server","running","locally","Parameters","--","--","--","--","--","tracker_host",":","str","The","host","URL","of","the","tracker","tracker_port",":","int","The","port","of","the","tracker","tracker_key",":","str","The","key","used","in","the","tracker","to","refer","to","a","worker"]
code: def __exit__(self, _type, _value, _traceback):
      if hasattr(self, "server"):
          del self.server
      if hasattr(self, "tracker"):
          del self.tracker
  
imports: from tvm.rpc.tracker import Tracker
  from tvm.rpc.server import Server
label_desc: Use image node_id 3 for calling the LocalRPC obj's underlying member method code with example usage: obj.__exit__(_type, _value, _traceback) without return types