serializer.py 文件源码

def to_binary(self, message):
        '''
        Given a text message, returns a binary string (still represented as a
        character string).
        '''
        # All spaces are encoded as null bytes:
        message = message.replace(self.SILENCE_TOKEN, self.SILENCE_ENCODING)
        # handle unicode
        message = codecs.encode(message, 'utf-8')
        data = []
        for c in message:
            # get the numeric value of the character
            try: 
                c = ord(c)
            except TypeError:
                # already an int (Python 3)
                pass
            # convert to binary
            bin_c = bin(c)
            # remove the '0b' prefix
            bin_c = bin_c[2:]
            # pad with zeros
            bin_c = bin_c.zfill(8)
            data.append(bin_c)
        return ''.join(data)