Python3实现的字典遍历操作详解

> d={'list':[1, 2, 3],1:123,'111':'python3','tuple':(4, 5, 6)}
> print(d)
{1: 123, 'list': [1, 2, 3], '111': 'python3', 'tuple': (4, 5, 6)}

> d={'list':[1, 2, 3],1:123,'111':'python3','tuple':(4, 5, 6)}
> for key in d:
    print(str(key)+':'+str(d[key]))
list:[1, 2, 3]
1:123
111:python3
tuple:(4, 5, 6)

> d={'list':[1, 2, 3],1:123,'111':'python3','tuple':(4, 5, 6)}
> for key in d.keys():
    print(key)
1
list
111
tuple

> d={'list':[1, 2, 3],1:123,'111':'python3','tuple':(4, 5, 6)}
> for value in d.values():
    print (value)
[1, 2, 3]
123
python3
(4, 5, 6)

> d={'list':[1, 2, 3],1:123,'111':'python3','tuple':(4, 5, 6)}
> for item in d.items():
    print(item)
('list', [1, 2, 3])
(1, 123)
('111', 'python3')
('tuple', (4, 5, 6))

> d={'list':[1, 2, 3],1:123,'111':'python3','tuple':(4, 5, 6)}
> for key,value in d.items():
    print(key,value)
list [1, 2, 3]
1 123
111 python3
tuple (4, 5, 6)

> d={'list':[1, 2, 3],1:123,'111':'python3','tuple':(4, 5, 6)}
> for (key,value) in d.items():
    print(key,value)
list [1, 2, 3]
1 123
111 python3
tuple (4, 5, 6)