题解 | 统计字符

import sys
import string
all_s = string.ascii_letters

s = input()
d = {'s':0,'n':0,' ':0,'o':0}
for _ in s:
    if _ in all_s:
        d['s']+=1
    elif _ in {'1','2','3','4','5','6','7','8','9','0'}:
        d['n']+=1
    elif _ == ' ':
        d[' ']+=1
    else:
        d['o']+=1
print(d['s'])
print(d[' '])
print(d['n'])
print(d['o'])