7. Image getpalette

See: https://pillow.readthedocs.io/en/stable/reference/Image.html#PIL.Image.Image.getpalette

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7.1. Getpalette

Use the Image.getpalette(rawmode='RGB') method to return the image palette as a list of color values [r, g, b, …], or None if the image has no palette.

rawmode - The mode in which to return the palette. None will return the palette in its current mode.

The code below converts an image to have a palette then gets the palette for printing.

from PIL import Image

with Image.open("test_images/shapes.png") as im:
    im1 = im.convert(mode="P", palette=Image.Palette.ADAPTIVE)
    print(im1.getpalette())
    # [0, 0, 0, 205, 85, 207,...]