python字典循环和迭代器_iter函数输出字典python

列表按下表取值

lis=[1,2,3,4,0]
als=['a','b','c','r','w','r']
for index in lis:
    p=als[index]
    print(p)
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字典循环

#字典循环
same={"name":17,"sert":18,"chrng":19}
l=[1,3,4,5,6,7,9]

for i in same:
    print(i,same[i])

for i in same.keys():#键
    print(i)

for i in same.values():#值
    print(i)

for i in same.items():#全局
    print(i)

#迭代器列表
iterator=l.__iter__()
while True:
    try:
        lis=iterator.__next__()
        print(lis)
    except:
        break
#字典迭代器
iterator=same.__iter__()
while True:
    try:
        lis=iterator.__next__()
        print(lis,same[lis])
    except:
        break

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