No module named 'acts.ActsPythonBindings'

[bedanar]

I have built ACTS with the following commands:
git clone https://github.com/acts-project/acts acts_src
cmake -B acts_build -S acts_src -DCMAKE_PREFIX_PATH=/DD4hep/install/cmake -DACTS_BUILD_UNITTESTS=on -DACTS_BUILD_FATRAS=on -DACTS_BUILD_PLUGIN_DD4HEP=ON -DACTS_BUILD_PLUGIN_FPEMON=ON -DACTS_BUILD_PLUGIN_GEANT4=ON -DACTS_BUILD_PLUGIN_JSON=ON -DACTS_BUILD_FATRAS_GEANT4=ON -DACTS_BUILD_EXAMPLES_DD4HEP=ON -DACTS_BUILD_EXAMPLES_GEANT4=ON -DACTS_BUILD_EXAMPLES_HASHING=ON -DACTS_BUILD_EXAMPLES_PYTHIA8=ON -DACTS_BUILD_EXAMPLES_PYTHON_BINDINGS=ON -DACTS_SETUP_EIGEN3=ON -DLCIO_DIR=LCIO/lib/cmake/LCIO/ -DPython_EXECUTABLE=/.cache/pypoetry/virtualenvs/nvalieva-c6oT38Gf-py3.12/bin/python -DEDM4HEP_INCLUDE_DIR=/EDM4hep/install -DDD4HEP_INCLUDE_DIR=/DD4hep
cmake --build acts_build

And then ran source acts_build/python/setup.sh, it outputted:

INFO:    Found OpenDataDetector and set it up
INFO:    Acts Python 3.12 bindings setup complete.

but when I try to run python acts_src/Examples/Scripts/Python/ckf_tracks.py, I have and error:

Traceback (most recent call last):
  File "/home/nvalieva/acts-naf/acts_src/Examples/Scripts/Python/ckf_tracks.py", line 6, in <module>
    import acts
  File "/home/nvalieva/acts-naf/acts_build/python/acts/__init__.py", line 7, in <module>
    from .ActsPythonBindings import *
ModuleNotFoundError: No module named 'acts.ActsPythonBindings'

OS: Ubuntu 24.04.1 GNU/Linux 6.11.0-19-generic x86_64
Root version: 6.32.04

Could you please help to find out what is the problem?

[paulgessinger]

Hi @bedanar!

• Can you check which version of python you're running this with? It needs to be the same python that ACTS was built with.
• Can you check the contents of /home/nvalieva/acts-naf/acts_build/python/acts/ and see if the required .so files are present?

[bedanar]

@paulgessinger, In /home/nvalieva/acts-naf/acts_build/python/acts/ I have these files:

ActsPythonBindingsDD4hep.cpython-312-x86_64-linux-gnu.so  __init__.py  _adapter.py
ActsPythonBindingsGeant4.cpython-312-x86_64-linux-gnu.so  __pycache__  examples

I used python 3.12 from virtual environment /home/nvalieva/.cache/pypoetry/virtualenvs/nvalieva-c6oT38Gf-py3.12/bin/python