根据列表内车牌号,统计各省市车牌占有量

1 cars = ['鲁A32444','鲁B12333','京B8989M','黑C49678','黑C46555','沪 B25041']
2 locals = {'沪':'上海', '黑':'黑龙江', '鲁':'山东', '鄂':'湖北', '湘':'湖南'}

第一种做法:

dic = {}
all = "".join(cars)         #把所有车牌连接起来.replace(" ","")
for i in locals:            
    num = all.count(i)      #通过count计数
    dic[locals[i]]=num      #将地市和数量添加到字典
print(dic)

结果对照:

{'上海': 1, '黑龙江': 2, '山东': 2, '湖北': 0, '湖南': 0}

第二种做法:

1 dic = {}
2 for i in cars:              
3     c = i[0]                #循环取到所有车牌的地市简称
4     if c in locals:         #如果简称在地市对应表里则添加
5         dic[locals.get(c)] = dic.get(locals.get(c),0)+1         #将获取到的添加到字典里
6 print(dic)

结果对照:

1 {'山东': 2, '黑龙江': 2, '上海': 1}