main函数里面直接join报错了,改成了： def main(): rres = '' classdic = defaultdict(int) for line in sys.stdin: ip, ym = line.split('~') resprint(ip, ym, classdic) res = [] for key in ['a', 'b', 'c', 'd', 'e', 'wrong', 'private']: res.append(classdic[key]) res_len = len(res) j = 0 for k in res: j += 1 rres += str(k) if(j==res_len):pass else:rres += ' ' print(rres) 然后运行只通过8/10