之前小编向大家介绍了dict函数和字典的创建过程(https://www.py.cn/jishu/jichu/21780.html),大家也都知道字典是python语言中经常使用的一种数据类型。字典是一种可存储任意类型的数据,并且字典储存的数据也是可以修改的。在使用字典的时候我们经常会遇到字典的遍历的问题,该如何解决呢?本文小编就向大家介绍python字典遍历的几种方法:遍历key、遍历value、遍历字典项、遍历key-value。
1、遍历key>>> d
{'set': {'c', 'a', 'b'}, 'list': [1, 2, 3], 'tuple': (4, 5, 6), 'version': 'python3.7.4'}
>>> for k in d.keys():
... print(k)
...
set
list
tuple
version
2、遍历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、遍历字典项>>> for kv in a.items():
print(kv)
('a', '1')
('b', '2')
('c', '3')
4、遍历key-value>>> 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, 快三大小单双稳赚买法ue in d.values():
print (value)
[1, 2, 3]
123
python3
(4, 5, 6)
3、遍历字典项>>> for kv in a.items():
print(kv)
('a', '1')
('b', '2')
('c', '3')
4、遍历key-value>>> 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)
以上就是python字典遍历的几种方法:遍历key、遍历value、遍历字典项、遍历key-value。希望能对你有所帮助哟~