Specify image filling color when rotating in python with PIL and setting expand argument to true

Question

I\'m trying to rotate an image in Python using PIL and having the expand argument to true. It seems that when the background of my image is black, the resulting image saved

Answer 1

There is a parameter fillcolor in a rotate method to specify color which will be use for expanded area:

white = (255,255,255)
pil_image.rotate(angle, PIL.Image.NEAREST, expand = 1, fillcolor = white)

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