Python笔记(二)查找重复元素

一、查找数列重复元素---count()

>>> list = [1,2,2,2,2,3,3,3,4,4,4,4]

>>> set = set(list)

>>> for item in set:

         print("the %d has found %d" %(item,list.count(item)))

#输出
#the 1 has found 1
#the 2 has found 4
#the 3 has found 3
#the 4 has found 4

 

二、查找重复元素，使用 Counter

>>> from collections import Counter

>>> Counter([1,2,2,2,2,3,3,3,4,4,4,4])

#输出
#Counter({2: 4, 4: 4, 3: 3, 1: 1})

 

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参考自：

   [1]  作者：范恒

         https://www.cnblogs.com/AaronFan/p/6084175.html