#输入一行字符,分别统计出其中英文字母、空格和其它字符的个数
import string
s = input('input a string:')
letter = 0
space = 0
digit = 0
other = 0
for c in s:
if c.isalpha():
letter+=1
elif c.isspace():
space+=1
elif c.isdigit():
digit+=1
else:
other+=1
print('There are %d letters, %d spaces, %d digits and %d other characters in your string.'\
%(letter,space,digit,other))