[Python] 리스트 안에 중복된 원소의 개수 구하기

import collections a = [1,1,1,1,2,2,2,2,3,3,4,5,5] counter=collections.Counter(a) print(counter) # Counter({1: 4, 2: 4, 3: 2, 5: 2, 4: 1}) print(counter.values()) # [4, 4, 2, 1, 2] print(counter.keys()) # [1, 2, 3, 4, 5] print(counter.most_common(3)) # [(1, 4), (2, 4), (3, 2)] dict = [] for key, value in counter.items(): dict[key] = value