def set_pixels()

in source/cf/defaults/lambdas/sputnik-rpi-sense-hat-demo-python/sense_hat/sense_hat.py [0:0]

• 14 lines of code
• 8 McCabe index (conditional complexity)

    def set_pixels(self, pixel_list):
        """
        Accepts a list containing 64 smaller lists of [R,G,B] pixels and
        updates the LED matrix. R,G,B elements must intergers between 0
        and 255
        """

        if len(pixel_list) != 64:
            raise ValueError('Pixel lists must have 64 elements')

        for index, pix in enumerate(pixel_list):
            if len(pix) != 3:
                raise ValueError('Pixel at index %d is invalid. Pixels must contain 3 elements: Red, Green and Blue' % index)

            for element in pix:
                if element > 255 or element < 0:
                    raise ValueError('Pixel at index %d is invalid. Pixel elements must be between 0 and 255' % index)

        with open(self._fb_device, 'wb') as f:
            map = self._pix_map[self._rotation]
            for index, pix in enumerate(pixel_list):
                # Two bytes per pixel in fb memory, 16 bit RGB565
                f.seek(map[index // 8][index % 8] * 2)  # row, column
                f.write(self._pack_bin(pix))