<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def title(self):
 """ get title of this node. If an entry for this course is found in the configuration namemap it is used, otherwise the default value from stud.ip is used. """

        tmp = c.namemap_lookup(self.id) if c.namemap_lookup(self.id) is not None else self._title
        return secure_filename(tmp)