from collections import Counter print Counter(['B','B','C','B','A','C','A','C','A']) print Counter({'A':3,'B':3,'C':3}) print Counter(A=3,B=3,C=3) #OUTPUT #Counter({'A': 3, 'C': 3, 'B': 3}) #Counter({'A': 3, 'C': 3, 'B': 3}) #Counter({'A': 3, 'C': 3, 'B': 3})