python如何遍历dict
python遍历字典" title="python遍历字典">python遍历字典有以下几种方式
我们先创建一个字典 D={‘a’:1,‘b’:2,’b‘:3,’d‘:4}
1. 遍历key值
for key in a:pritn(key+':'+a[key])
for key in a.keys():
print(key+':'+a[key])
2.遍历value值
for value in a.values():print(value)
3.遍历字典项
for kv in a.items():print(kv)
(‘a’,'1')(...)
4.遍历字典键值
for key,value in a.items():print(key+':'+value)
for (key,value) in a.items():
print(key+':'+value)
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