‘clear‘,
‘copy‘,
‘fromkeys‘,
‘get‘,
‘has_key‘,
‘items‘,
‘iteritems‘,
‘iterkeys‘,
‘itervalues‘,
‘keys‘,
‘modified‘,
‘new‘,
‘on_update‘,
‘permanent‘,
‘pop‘,
‘popitem‘,
‘setdefault‘,
‘update‘,
‘values‘,
‘viewitems‘,
‘viewkeys‘,
‘viewvalues‘
原文：http://www.cnblogs.com/hushaojun/p/4699359.html