return datetime.datetime.strptime(date_part, '%Y%m%d_%H%M%S')

    def command(self):

        #get SqlAlchemy session

        self._init_session()

        repos_location = Ui.get_repos_location()

        to_remove = []

        for dn_, dirs, f in os.walk(safe_str(repos_location)):

            alldirs = list(dirs)

            del dirs[:]

            if ('.hg' in alldirs or

                'objects' in alldirs and ('refs' in alldirs or 'packed-refs' in f)):

                continue

            for loc in alldirs:

                if REMOVED_REPO_PAT.match(loc):

                    to_remove.append([os.path.join(dn_, loc),

                                      self._extract_date(loc)])

                else:

                    dirs.append(loc)

        #filter older than (if present)!

        now = datetime.datetime.now()

        older_than = self.options.older_than