How to use the cleo._compat.decode function in cleo

def get_output_content(self, output):
        output.get_stream().seek(0)

        value = output.get_stream().getvalue()

        return decode(value).replace(os.linesep, "\n")

def get_output_content(self, output):
        output.get_stream().seek(0)

        value = output.get_stream().getvalue()

        return decode(value)

def _write_error(self, output, error):
        """
        Outputs an error message.

        :param output: An Output instance
        :type output: Output

        :param error: A Exception instance
        :type error: Exception
        """
        if self.helper_set is not None and self.helper_set.has('formatter'):
            message = self.helper_set.get('formatter').format_block(decode(str(error)), 'error')
        else:
            message = '%s' % decode(str(error))

        output.writeln(message)

if value.startswith(ret) and i != len(value):
                        num_matches += 1
                        matches[num_matches - 1] = value

            # Erase characters from cursor to end of line
            output.write('\033[K')

            if num_matches > 0 and ofs != -1:
                # Save cursor position
                output.write('\0337')
                # Write highlighted text
                output.write('' + matches[ofs][i:] + '')
                # Restore cursor position
                output.write('\0338')

        subprocess.call(['stty', '%s' % decode(stty_mode)])

        return ret

def _write_error(self, output, error):
        """
        Outputs an error message.

        :param output: An Output instance
        :type output: Output

        :param error: A Exception instance
        :type error: Exception
        """
        if self.helper_set is not None and self.helper_set.has('formatter'):
            message = self.helper_set.get('formatter').format_block(decode(str(error)), 'error')
        else:
            message = '%s' % decode(str(error))

        output.writeln(message)

:param question: The question to ask
        :type question: Question

        :rtype: str
        """
        autocomplete = question.autocompleter_values

        ret = ''

        i = 0
        ofs = -1
        matches = [x for x in autocomplete]
        num_matches = len(matches)

        stty_mode = decode(subprocess.check_output(['stty', '-g'])).rstrip('\n')

        # Disable icanon (so we can fread each keypress) and echo (we'll do echoing here instead)
        subprocess.check_output(['stty', '-icanon', '-echo'])

        # Add highlighted text style
        output.get_formatter().add_style('hl', 'black', 'white')

        # Read a keypress
        while True:
            c = input_stream.read(1)

            # Backspace character
            if c == '\177':
                if num_matches == 0 and i != 0:
                    i -= 1
                    # Move cursor backwards

"""
        Read user input.

        :param stream: The input stream

        :return:
        """
        if stream == sys.stdin:
            ret = stream.readline()
        else:
            ret = stream.readline(4096)

        if not ret:
            raise RuntimeError('Aborted')

        return decode(ret.strip())