#题目：输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。

s = input('请输入字符串:')

alf = 0
space = 0
digi = 0
other = 0

for i in s:
    if i.isalpha():
        alf += 1
    elif i.isspace():
        space += 1
    elif i.isdigit():
        digi += 1
    else:
        other += 1

print ('alf = %s'% alf,'space = %s'% space ,'digi = %s'% digi, 'other = %s'%other)