python中键值对D={'a':1,'b':2,'c':3}是没有排序的。每次输出D显示均显 ...答:按照键值排序:print sorted(D.iteritems(),key = lambda asd:asd[0]) [('a', 1), ('b', 2), ('c', 3)]print sorted(D.iteritems(),key = lambda asd:asd[0],reverse=True)[('c', 3), ('b', 2), ('a', 1)]按照values排序:print sorted(D.iteritems()...