Why is PIL.UnidentifiedImageError being raised when trying to open an image from an io.bytesIO object?

Question

In short terms, when trying to open an image using byte data, I unfortunately end up with an error. Here is some of the code for more clarity.

test2.py:

logo = b"iVBORw0KGgoAAAA ... "
#(It's 60k characters long don't worry about it)

test.py:

import test2 as pim
import io
from PIL import Image, ImageTk

sol = io.BytesIO(pim.logo)
image = Image.open(sol)

Apparenly for some strange reason, I end up with this error:

PIL.UnidentifiedImageError: cannot identify image file <_io.BytesIO object at 0x0000028D819373D0>

I've tried searching on other posts. I found some similar ones, but none of the solutions worked.

Answer 1

@martineau actually answered the question but here is a quick runup:

Convert base64 data, use it in a bytesio class and put it into an image:

s = base64.b64decode(pim.logo)
sol = io.BytesIO(s)
image = Image.open(sol)