print dic.items() #[('a', 'hello'), ('c', 'you'), ('b', 'how')]
print dic.iteritems() #<dictionary-itemiterator object at 0x020E9A50>
深究:iteritor是叠代器的意思,壹次反悔壹個數據項,知道沒有為止
for i in dic.iteritems():
print i
結果:('a', 'hello')
('c', 'you')
('b', 'how')