Hi, I happened to reproduce the problem when working on pytorch-audio.
The root cause is that pytorch is only built for one python version (now 3.13). The following paragraph is excerpted from its d/rules: > # [maintainer note on python version] > # This package is built for a single version (default python3) only. > # Extending to multiple python3 versions is not easy because > # libtorch_python.so is coupled with a single python version. So we would have the following layout: /usr/lib/python3/dist-packages/torch/_C.cpython-313-x86_64-linux-gnu.so /usr/lib/python3/dist-packages/torch/_C/_VariableFunctions.pyi /usr/lib/python3/dist-packages/torch/_C/__init__.pyi If you try to use torch with python 3.12, the _C.python-313-foo.so will be ignored, thus leading to the ImportError. So any package depending on pytroch would need to use the exactly same version of python that pytorch uses. Thanks, Shengqi Chen
