>>> nums = [1,2,3,4,3,2,1,0,1] >>> counter = Counter(nums) >>> counter.most_common(1) # 出现频率最高的元素 [(1, 3)] # 1 出现3次 >>> counter.most_common(2) # 出现频率前2个元素 [(1, 3), (2, 2)] >>>