Issue opening a .ico file

[Jhynjhiruu]

What did you do?

I tried to open a .ico file from a BytesIO object, to use as the icon for my program.

What did you expect to happen?

The file would be opened successfully and the icon used for the program

What actually happened?

An error was raised, specifically builtins.ValueError: This is not one of the allowed sizes of this image

What are your OS, Python and Pillow versions?

• OS: Windows 10
• Python: 3.7.3
• Pillow: 6.0.0

Please include code that reproduces the issue and whenever possible, an image that demonstrates the issue. Please upload images to GitHub, not to third-party file hosting sites. If necessary, add the image to a zip or tar archive.

The best reproductions are self-contained scripts with minimal dependencies. If you are using a framework such as plone, Django, or buildout, try to replicate the issue just using Pillow.

from zlib import decompress
from PIL.Image import open as imageopen
from PIL.ImageTk import PhotoImage
from io import BytesIO
icon = b"\xadW\tP\x93g\x1a\xfeAZ\xab\xd5Z\xc5\xda\xd9\x9d\xedj\xdb\xe9\xacV\xa9\xd2Z@Q\xc0**r\x88\x1c\x06\x04\x82\xdc\x87@\x94+ \xe1\x0cG\x12.\tI\x08\x81p\x87p\xdfG\x00\x05\x8a\x80 (xPE\xb4\xd5\xaa\xdd\xba;\xbb\xed\xb8u\xb7;\xbb3\xcf\xbe\t\xb2\xd3\xd9\xedtl\xa7\x7f\xe6\xc9\xfb\xfd\xdf\xff}\xef\xf3^\xff\xf7}?\xc3\xe8\xd1o\x93\x15\xa3\xfdg\xea^g\x98\r\x0c\xc3l&l\"P\xb7\xae\x7f\xe92|u\x11?\xf7\xb2\xb6>\xf8\xf6\xa1\x83\x87\xbd\xecl\xed\xe5\xc7\x1c\x9dF\x9d\x9c\\\x1e:;\xb9<u:\xe6\xfc\xd4\xc1\xc1\xf1\x91\xcda\xdb\xf1\xfd\xfb\x0f\x14\xef1\xdf\xebejb\xf6\x0e\xf3+]vv\xf6\xdb\x9d\x1c\x9d\x14l/\xf6C_\xff@\xf8\xfa\x87\xc0\xdb\'\x04l\x9fPxy\x07\xc3\xc3+\x08\xee\x9e\x01`\xb9\x9f\x84\xebqO\xb8\xb8\xb0`o\x7f\xf4\xe1>\xabOJ\xcdLw\x1b\xffR^g\'\xe77\\]\\\xb3\xfd\xfc\xfc\xff\x19\x16\xc6AhX$N\x9f\x8eAj\xfc\x19\x14\xa4z\xa14\xc3\x0eU\xc2\xa3\xa8\x128\xe8\xda\xf9)l\xf0b\xc2\xe1\xe7\x1f\x0cW76\\]\xdd\xe1\xe8\xe8\xf4/\x8b\xbdVy&;M\xde\xfc9\xdc\xac\xe3n\xc6l\xb6\xf7\x15N\xc4\x19p\"\x13\x10\x1f\xc7\x85B\x10\x8c\xf6\x1cc\xf4\x89~\x87~\xc1K8\x9f\xc9` 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dec = decompress(icon, -15)

iconphoto = PhotoImage(imageopen(BytesIO(dec)))

Weirdly, the exact same code worked perfectly in Python 3.6. Doing some investigating, it appears that here:

@size.setter
def size(self, value):
    if value not in self.info['sizes']:
        raise ValueError(
            "This is not one of the allowed sizes of this image")
    self._size = value

self.info['sizes'] is being set incorrectly, because the .ico file is 32x32.

[radarhere]

When you say that it worked perfectly in Python 3.6, I imagine that you were using an earlier version of Pillow. This error was introduced in Pillow 5.3.0.

I've created PR #3836 to resolve this.

[Jhynjhiruu]

Oh, interesting, thanks!

[joshuatbadger]

I found this issue and was hoping I would be able to update and get the fix. However, when running my code (same issue as @Jhynjhiruu), I get the following traceback. Appears to be the same error.

Below are what I have installed right now.

[hugovk]

This was fixed in #3836, released in Pillow 6.1.0.

You're using Pillow 6.0.0, please upgrade :)

[joshuatbadger]

Wow, fast response! Thanks!

The screenshot above shows I ran pip install --upgrade pillow, and it failed to go any higher. How do I upgrade to 6.1.0 if the above is not how?

[hugovk]

You're welcome!

You have more than one Python in your system: python is Python 3.5, but pip is using Python 3.7.

python -m pip install --upgrade pillow will update Pillow for Python 3.5.