Python Logo Widgets — Troubleshooting

The widget is a black rectangle

bg defaults to "black", and the badges have transparent areas that show the label's background. Match it to your window:

LogoWidget(root, bg="white")

The widget is blank

The classic Tkinter cause is a garbage-collected PhotoImage — but these classes bind it to self._image precisely to prevent that, so it should not happen through normal use.

If it does, check you have not reassigned _image without updating _label:

w._image = w._image.subsample(2)
w._label.configure(image=w._image)     # both, or the label keeps the old one

RuntimeError: Too early to create image

You instantiated a widget before creating a Tk() root. PhotoImage needs a live interpreter:

root = tk.Tk()          # first
LogoWidget(root)        # then

ModuleNotFoundError: No module named 'tkinter'

Separate package on most Linux distributions:

sudo apt install python3-tk        # Debian, Ubuntu
sudo dnf install python3-tkinter   # Fedora

FileNotFoundError for a bundled image

The package's imgs/ directory did not install. Reinstall:

pip install --force-reinstall Python-Logo-Widgets

If you are running from a source checkout, confirm python_logo_widgets/imgs/ contains logo.gif, length.gif, width.gif, and __init__.py — the last is what makes the directory addressable by importlib.resources.

It fails inside a zipped package or a frozen build

_load_image returns str(files(...).joinpath(name)), which assumes the resource has a real filesystem path. A zipimported package has none. Recorded in internal/known-issues.md; importlib.resources.as_file() is the fix.

Normal pip installs are unzipped, so this only affects unusual packaging.

The demo does nothing

python-logo-widgets
python -m python_logo_widgets

Both should open a window. If neither does, check the install placed the console script on your PATH — python -m works regardless.

Tests fail on a headless machine

Tkinter needs a display:

xvfb-run -a pytest

The image is too large for my layout

There is no size parameter, and PhotoImage scales only by integer factors. See Configuration — and note the trademark position on modifying the marks in FAQ.

pack and grid conflict

Each widget uses pack internally, for its own label. That does not constrain how you place the widget itself — mixing managers in one container is the error, and these keep theirs inside their own frame.

Still stuck

Open an issue or ask on the Discord, with your OS, Python version, and how you installed it.