1 def count(n):    
 2     upp = 0
 3     low = 0
 4     num = 0
 5     sym = 0    
 6     for i in n:
 7         if i.isupper():
 8             upp +=1
 9         elif i.islower():
10             low +=1
11         elif i.isdigit():
12             num +=1
13         else:
14             sym +=1
15     return "大写字母的个数是:{0}\n小写字母的个数是:{1}\n数字的个数是:{2}\n符号的个数是:{3}".format(upp,low,num,sym)
16 print(count(input("请输入字符串:")))