def set_pixel()

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

• 21 lines of code
• 11 McCabe index (conditional complexity)

    def set_pixel(self, x, y, *args):
        """
        Updates the single [R,G,B] pixel specified by x and y on the LED matrix
        Top left = 0,0 Bottom right = 7,7

        e.g. ap.set_pixel(x, y, r, g, b)
        or
        pixel = (r, g, b)
        ap.set_pixel(x, y, pixel)
        """

        pixel_error = 'Pixel arguments must be given as (r, g, b) or r, g, b'

        if len(args) == 1:
            pixel = args[0]
            if len(pixel) != 3:
                raise ValueError(pixel_error)
        elif len(args) == 3:
            pixel = args
        else:
            raise ValueError(pixel_error)

        if x > 7 or x < 0:
            raise ValueError('X position must be between 0 and 7')

        if y > 7 or y < 0:
            raise ValueError('Y position must be between 0 and 7')

        for element in pixel:
            if element > 255 or element < 0:
                raise ValueError('Pixel elements must be between 0 and 255')

        with open(self._fb_device, 'wb') as f:
            map = self._pix_map[self._rotation]
            # Two bytes per pixel in fb memory, 16 bit RGB565
            f.seek(map[y][x] * 2)  # row, column
            f.write(self._pack_bin(pixel))