Rotate photo via python

Question

I have a photo on my disk and I want to rotate it clockwise in 90 degrees. I'm trying to use PIllow as described here: https://pillow.readthedocs.io/en/stable/handbook/tutorial.html#geometrical-transforms

pill_img = Image.open(abs_img_src)
pill_img.rotate(90)

But nothing changes. Did I miss something?

Michael Recachinas · Accepted Answer · 2015-11-14 18:12:46Z

1

It looks like it returns a new image, so you'll want something like

from PIL import Image

abs_img_src = 'test.png'

pill_img = Image.open(abs_img_src)
pill.show()

rotated_img = pill_img.rotate(90)
rotated_img.show()

If we let our 'test.png' be the Python logo

pill.show()

will output

rotated_img = pill_img.rotate(90)
rotated_img.show()

will result in

Just to double check, let's now call im.show() after the im.rotate(90):

Sure enough, we get the result we expected -- i.e., im.rotate does not mutate im, but rather it returns a new rotated Image.

answered Nov 14, 2015 at 17:59

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2 Comments

so I have to save rotated photo on disk? rotated_img.save(abs_img_src) ?

@ИгорьОлешко -- Correct. You'll want to save with rotated_img.save("rotated-" + abs_img_src) or some such.