题解 | 字符串加密

import string

key = input()
text = input()

key_only = ''.join(dict.fromkeys(key))#去重
ciphertext = key_only + ''.join(char for char in string.ascii_lowercase if char not in key_only)
codebook = dict(zip(string.ascii_lowercase, ciphertext))

result = ''.join(codebook[char] for char in text)
print(result)