原题传送门

1. 题目描述

2. Solution 1

import sys  if sys.platform != linux:     file_in = open(input/HJ40.txt)     sys.stdin = file_in  for line in sys.stdin:     result = dict(letters=0, spaces=0, digits=0, other=0)     s = line.strip()     for c in s:         if c.isalpha():             result['letters'] += 1         elif c == ' ':             result['spaces'] += 1         elif c.isdigit():             result['digits'] += 1         else:             result['other'] += 1     for v in result.values():         print(v)