from collections import Counter data_list = [1,1,2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4] least_common = Counter(data_list).most_common()[-1] print(least_common) # The number 1 appears 2 times (1, 2)
import collections c = collections.Counter(a=1, b=2, c=3) n = 2 print c.most_common()[:-n-1:-1]Output[('a', 1), ('b', 2)]
