human
Solve the following python programming problem given the following code:
def archive(self, cursor) : 
    'Given a cursor, use it to archive ourself.

        Archiving means changing to a random username so the username they were
        using is released. We also sign them out.

        ' 
    self.final_check (cursor) 
    def reserve(cursor, username) : 
        check = cursor.one ('

                UPDATE participants
                   SET username=%s
                    , username_lower=%s
                    , claimed_time=NULL
                    , session_token=NULL
                    , session_expires=now()
                    , giving = 0
                    , taking = 0
                 WHERE username=%s
             RETURNING username

            ', (username, username.lower (), self.username), default = NotSane) 
        return check 
archived_as = safely_reserve_a_username (cursor, reserve = reserve) 
    add_event (reserve, 'participant', dict (id = self.id, action = 'archive', values = dict (new_username = archived_as, old_username = self.username))) 
    return archived_as 

    
    

    Fix the buggy line: add_event (reserve, 'participant', dict (id = self.id, action = 'archive', values = dict (new_username = archived_as, old_username = self.username)))
assistant
#Here is Python program to fix the buggy line: add_event (reserve, 'participant', dict (id = self.

add_event (cursor, 'participant', dict (id = self.id, action = 'archive', values = dict (new_username = archived_as, old_username = self.username)))