<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def set_historylog(self, historylog):

 """Bind historylog instance to this console
 Not used anymore since v2.0"""

        historylog.add_history(self.shell.history_filename)
        self.shell.append_to_history.connect(historylog.append_to_history)