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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def abort(self, err):
 """Called by a client to abort a transaction."""

        if _debug: IOCB._debug("abort(%d) %r", self.ioID, err)

        if self.ioController:
            # pass to controller
            self.ioController.abort_io(self, err)
        elif self.ioState < COMPLETED:
            # just fill in the data
            self.ioState = ABORTED
            self.ioError = err
            self.trigger()