code: def get_current_context_id():
      
      global get_current_context_id
      if greenlet is not None:
          if stackless is None:
              get_current_context_id = greenlet.getcurrent
              return greenlet.getcurrent()
          return greenlet.getcurrent(), stackless.getcurrent()
      elif stackless is not None:
          get_current_context_id = stackless.getcurrent
          return stackless.getcurrent()
      get_current_context_id = _thread.get_ident
      return _thread.get_ident()
docs: Identifis which context it is (greenlet, stackless, or thread).
  
      :returns: the identifier of the current context.