统计一行字符的大写字母，小写字母和数字的个数

Question

Answer 1

哈喽，有用请点采纳~

s = input()
str_upper, str_lower, n = 0, 0, 0
for i in s:
    if i.islower():
        str_lower += 1
    elif i.isupper():
        str_upper += 1
    elif i.isdigit():
        n += 1
print(str_upper)
print(str_lower)
print(n)