如何在没有.append（）的情况下继续添加到数组？

Question

长话短说，我正在编写一个程序来解码隐藏在音频文件中的消息，我遇到了一个问题，我需要在数组或字符串中存储一个“提取的”ASCII字母，以便打印完整的消息。我现在的代码只给出了“消息”中的最后一个字母

def decode(sound):

  for sample in getSamples (sound):
      ampValue = getSampleValue (sample)
      asciiNum = ampValue % 128


      if asciiNum == 0:
        break

      asciiLet = chr (asciiNum)


  showInformation (asciiLet)

如何让我的代码显示隐藏在屏蔽音频中的所有字母？而且，我必须在不导入任何模块的情况下执行此操作

Answer 1

youre getting the last letter because it always replaced the  variable 'asciiLet' every loop. try to create an inital value then add it. 

def decode(sound):
  asciiLet = '' #< - inital
  for sample in getSamples (sound):
      ampValue = getSampleValue (sample)
      asciiNum = ampValue % 128


      if asciiNum == 0:
        break

      asciiLet += chr (asciiNum)  #< - add it 


  showInformation (asciiLet)