persistent.py 文件源码

def viewitems(self):
            """Set-like object providing a view of index items.

            >>> index = Index('/tmp/diskcache/index')
            >>> index.clear()
            >>> index.update({'a': 1, 'b': 2, 'c': 3})
            >>> items_view = index.viewitems()
            >>> ('b', 2) in items_view
            True

            :return: items view

            """
            return ItemsView(self)