Rotating PIL Image does not seem to rotate canvas (no TKinter canvas added)

Figured it out. I'm going to leave it up to help others, as this seems to be a subtle yet important difference.

img = img.transpose(Image.ROTATE_270)

...or...

img = img.transpose(Image.ROTATE_90)

Docs

Use the optional expand flag in the rotate method:

image.rotate(45, expand=True)

https://pillow.readthedocs.io/en/3.1.x/reference/Image.html#PIL.Image.Image.rotate

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