方法一：

mylist = [1,2,2,2,2,3,3,3,4,4,4,4]myset = set(mylist)for item in myset: print("the %d has found %d" %(item,mylist.count(item)))

the 1 has found 1

the 2 has found 4

the 3 has found 3

the 4 has found 4

方法二：

from collections import CounterCounter([1,2,2,2,2,3,3,3,4,4,4,4])Counter({2: 4, 4: 4, 3: 3, 1: 1})

方法三：

List=[1,2,2,2,2,3,3,3,4,4,4,4]a = {}for i in List: if List.count(i)>1: a[i] = List.count(i)

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