code: def _raise_deferred_exc(self):
      
      if self._deferred_exception:
        try:
          exc_type, exc_value, exc_traceback = self._deferred_exception
          raise_with_traceback(exc_value, exc_traceback)
        except TypeError:
          # If `_deferred_exception` isn't a 3-item tuple (raising a TypeError on the above
          # destructuring), treat it like a bare exception.
          raise self._deferred_exception
docs: Raises deferred exceptions from the daemon's synchronous path in the post-fork client.