def _fletcher16_checksum(self, data):
        """
        Calculates a fletcher16 checksum for the list of bytes
        :param data: a list of bytes that comprise the message
        :return:
        """
        sum1 = 0
        sum2 = 0

        for i, b in enumerate(data):
            sum1 += b
            sum1 &= 0xff  # Results wrapped at 16 bits
            sum2 += sum1
            sum2 &= 0xff

        logger.debug('sum1: {} sum2: {}'.format(sum1, sum2))

        return sum1, sum2
def _fletcher16_checksum(self, data):
        """
        Calculates a fletcher16 checksum for the list of bytes
        :param data: a list of bytes that comprise the message
        :return:
        """
        sum1 = 0
        sum2 = 0

        for i, b in enumerate(data):
            sum1 += b
            sum1 &= 0xff  # Results wrapped at 16 bits
            sum2 += sum1
            sum2 &= 0xff

        logger.debug('sum1: {} sum2: {}'.format(sum1, sum2))

        return sum1, sum2
def _fletcher16_checksum ( self , data ) : sum1 = 0 sum2 = 0 for i , b in enumerate ( data ) : sum1 += b sum1 &= 0xff # Results wrapped at 16 bits sum2 += sum1 sum2 &= 0xff logger . debug ( 'sum1: {} sum2: {}' . format ( sum1 , sum2 ) ) return sum1 , sum2
Calculates a fletcher16 checksum for the list of bytes
        :param data: a list of bytes that comprise the message
        :return:
Calculates a fletcher16 checksum for the list of bytes : param data : a list of bytes that comprise the message : return :