将字典从key:value转换为value:出现的次数
将字典从key:value转换为value:出现的次数
提问于 2013-08-04 16:27:51
假设我有一本字典如下
d = {1: 7, 2: 8, 3: 9, 4: 7, 5: 8, 6: 9, 7: 7, 8: 8, 9: 9, 10: 9}如何获得最常见的值的字典，并按降序排序？
所以我希望
res = {9: 4, 8: 3, 7: 3}回答 1
Stack Overflow用户
回答已采纳
发布于 2013-08-04 16:28:59
使用collections.Counter
>>> from collections import Counter
>>> d = {1: 7, 2: 8, 3: 9, 4: 7, 5: 8, 6: 9, 7: 7, 8: 8, 9: 9, 10: 9}
>>> Counter(d.values())
Counter({9: 4, 8: 3, 7: 3})
>>> Counter(d.values()).most_common()
[(9, 4), (8, 3), (7, 3)]页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/18045043
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