统计一行字符的大写字母和数字的个数

Question

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Answer 1

s=input('请输入一行字符串:')
b,l,n=0,0,0 
for c in s:
    if c.islower():
        l+=1
    elif c.isupper():
        b+=1
    elif c.isdigit():
        n+=1
print("大写字母个数%d,小写字符个数%d,数字个数%d"%(b,l,n))