python 遍历_python中如何遍历字典

1. 遍历字典的键keypython学习网，大量的免费python视频教程，欢迎在线学习！

①>>> 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)

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

>>> for key in d.keys():

print(key)

1

list

111

tuple

2. 遍历字典的值value>>> 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)

3. 遍历字典的项>>> 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))

4. 遍历字典的key-value

①>>> 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)

②>>> 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)