after.py

class ImageProcessor:
    def __init__(
        self,
        image: Image,
        image_resizer: ImageResizer,
        image_grayscale_converter: ImageGrayscaleConverter,
        image_rotator: ImageRotator,
    ):
        self._image = image
        self._resizer = image_resizer
        self._grayscale_converter = image_grayscale_converter
        self._rotator = image_rotator
        
    def process(self, width=None, height=None, color=True, rotation=0):
        self._resizer.resize(image, width, height)
        self._grayscale_converter.convert(image, color)
        self._rotator.rotate(image, rotation)
        
        
class ImageResizer:
    pass
    
    
class ImageGrayscaleConverter:
    pass
    
    
class ImageRotator:
    pass

before.py

class ImageProcessor:
    def __init__(self, image):
        self._image = image

    def process(self, width=None, height=None, color=True, rotation=0):
        self._resize(width, height)
        if color is True:
            self._to_grayscale()
        self._rotate(rotation)
        
    def _resize(self, width, height):
        for h_pixel in self._image:
            for v_pixel in self._image:
                # I clearly have no idea how to resize an image
                self._image += (h_pixel + v_pixel) / (width * height)
                
    def _to_grayscale(self):
        for h_pixel in self._image:
            for v_pixel in self._image:
                pixel = self._image[h_pixel, v_pixel]
                # I clearly have no idea how to convert an image to grayscale
                self._image[h_pixel, v_pixel] = rgba(0, 0, 0, pixel.get_alpha())
                
    def _rotate(self, degrees):
        if degrees == 0:
            return
        for h_pixel in self._image:
            for v_pixel in self._image:
                pixel = self._image[h_pixel, v_pixel]
                # I clearly have no idea how to rotate an image
                self._image[h_pixel * degrees, -1 * v_pixel / degrees] = pixel