def fun(key, s): alphabet = 'abcdefghijklmnopqrstuvwxyz' key = key.lower() newkey = '' newalphabet = alphabet #得到密钥 for i, k in enumerate(key): if i == key.index(k):#实现了去重操作!如key.index('l') = 4 (只返回第一次出现时的位置!) newkey += k newalphabet = newalphabet.replace(k, '') newkey = newkey + newalphabet #得到密文 d = dict(zip(alphabet, newkey))#alphabet是d.keys() newkey是d.values() #字母字符的大小写状态保留 空格也要保留 temp = [] for i in s: if i == ' ': temp.append(' ') elif i.islower(): temp.append(d[i]) else: i = i.lower() temp.append(d[i].upper()) res = ''.join(temp) return res while True: try: key = input() s = input() print(fun(key, s)) except: break ''' TRAILBLAZERS Attack AT DAWN '''