data = ['32', '22', '12', '32', '22', '12', '31', '21', '11']
dict((x, data.count(x)) for x in data)
{'11': 1, '12': 2, '21': 1, '22': 2, '31': 1, '32': 2}
在python中制作字符串值的直方图
data = ['32', '22', '12', '32', '22', '12', '31', '21', '11']
dict((x, data.count(x)) for x in data)
{'11': 1, '12': 2, '21': 1, '22': 2, '31': 1, '32': 2}