ModuleNotFoundError: No module named '_ctypes'

[ViewtifulDave]

https://www.reddit.com/r/StableDiffusion/comments/10zfnlj/novice_guide_how_to_fully_setup_linux_to_run/

I followed this guide except with modern python and modern rocm version and I'm getting this error. I can't seem to get rocm 5.4 or 5.7 for some reason.

Help would be greatly appreciated

[hamedrabah]

_ctypes is a Python standard-library extension, not a ROCm package. This means the Python interpreter used for the WebUI was built without libffi support or is otherwise incomplete.

On Debian/Ubuntu, install the build dependency first:

sudo apt update
sudo apt install libffi-dev python3-dev
python3 -c "import _ctypes; print('ok')"

If Python came from pyenv or was compiled from source, installing libffi-dev is not enough by itself. Rebuild that exact Python version afterward, delete the WebUI virtual environment, and let it be recreated. Also use the Python version supported by the WebUI rather than substituting the newest available interpreter.

Run python -c "import sys, _ctypes; print(sys.executable)" before reinstalling WebUI dependencies. If that command fails, fix Python first.