def getOldest(self):
        """
            Returns the file earliest last-modified time.
        """
        flist_copy = []
        try:
            flist_copy = zip(map(os.path.getmtime, self), self)
        except TypeError:
            # there may be lists of lists
            temp = self._unwind()
            flist_copy = zip(map(os.path.getmtime, temp), temp)
        flist_copy.sort()
        try:
            time, fname = flist_copy[0]
        except IndexError:
            # probably an empty list
            return None
        return fname

            Returns the file earliest last-modified time.
        
recipes/Python/259147_FSList/recipe-259147.py