Exe-thumbnailer failing generating exe icon

Ask Fedora
1

I noticed that I had no .exe thumbnails and found that exe-thumbnailer was giving an error when running:

 $ exe-thumbnailer any-exe.exe

Traceback (most recent call last):
  File "/usr/bin/exe-thumbnailer", line 34, in <module>
    sys.exit(load_entry_point('icoextract==0.1.4', 'console_scripts', 'exe-thumbnailer')())
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.13/site-packages/icoextract/scripts/thumbnailer.py", line 63, in main
    generate_thumbnail(args.inputfile, args.outfile, large_size)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/icoextract/scripts/thumbnailer.py", line 33, in generate_thumbnail
    im.save(outfile, "PNG")
    ~~~~~~~^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.13/site-packages/PIL/Image.py", line 2605, in save
    save_handler(self, fp, filename)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.13/site-packages/PIL/PngImagePlugin.py", line 1371, in _save
    fp.write(_MAGIC)
    ^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'write'

I’m not sure if it’s a problem with my python or some missing library

Any idea what could be happening or possible solution?

Thanks.

Package version: python3-icoextract-0.1.4-10.fc41.noarch

My specifications:
Fedora Linux 41 (Workstation Edition) x86_64
Linux 6.12.11-200.fc41.x86_64
GNOME 47.3
Python 3.13.2

2

It seems like the Fedora packaged versions is one release version behind. You might want to try installing the latest version via Python’s pipx (it will require installing the python3-pip package via DNF):

sudo dnf install python3-pip
pip install pipx
pipx install "icoextract[thumbnailer]"

If the problem persists, then I would consider reporting the bug upstream: GitHub - jlu5/icoextract: Extract icons from Windows PE files (.exe/.dll).

nb: pipx allows you to install Python tools within their own environment so you don’t run into library dependency issues.

3

You could just use the standard venv module and avoid learning a new tool.

4

It would be worth reporting this problem on the Fedora bug tracker so that the maintainer know about the issue.

1 Like
5

Virtualenvs are nice and all, but forgetting to activate one before installing something will pollute your packages. pipx is the recommended method for installing and using Python applications without getting even deeper into tools like uv or pipenv.

6

You never need to activate a venv. You can just run the python that is in the venv bin folder directly. Forgetting to use a tool as required is true cor all the tools you list.

I do not agree with your recommendation of pipx.

All these other tools have their place, but for most people are not required.

7

It was an icoextract issue, I’ve reported this to the bug tracker.

Likewise, Thank you both very much for your suggestions.

EDIT: Update real reason.

1 Like