text: # _*_ coding:UTF-8 _*_
  
  from pycipher import Caesar
  
  # 加密 向后移
  def caesar_decode(string, key):
      plaintext = Caesar(int(key)).decipher(string, keep_punct=True)
      return plaintext
  
  # 解密 向前移
  def caesar_encode(string, key):
      plaintext = Caesar(int(key)).encipher(string, keep_punct=True)
      return plaintext
  
  # 爆破
  def caesar_brute(string):
      for i in range(26):
          print('%s:'% i, end='')
          a = caesar_encode(string, i)
          print(a)
  