Hi Rooters, very long time I haven’t been here :grinning: Here my problem under python3 import ROOT gives ImportError: Failed to import libcppyy3_9. Please check that ROOT has been built for Python 3.9 But it works with python2.7 root-config --python-version gives 2.7.16 So I am wondering i…

[image] dadoun: libcppyy3_9 So indeed libcppyy3_9.so was missing. I have recompiled the source now it works

Pyroot with python3

Wile_E_Coyote October 3, 2021, 8:34am 2

You MUST use EXACTLY the same Python version (and the same compiler) that your ROOT binaries were built for (otherwise, expect mysterious crashes anywhere, anytime): root-config --python-version # C/C++ calling python ; root-config --python2-version # python 2 calling C/C++ ; root-config --python3-version # python 3 calling C/C++ ; BTW. Remember to “source /the/location/of/ROOT/bin/thisroot.sh” to add your ROOT executables and libraries to your environment (when ROOT is not installed in some “…

show post in topic

Home
Categories
Guidelines
Terms of Service
Privacy Policy

Powered by Discourse, best viewed with JavaScript enabled