Failed to import libcppyy3_9. Please check that ROOT has been built for Python 3.9

[Xavier_James]

Hello,

I am new to ROOT. Currently, I am using anaconda to run PyROOT. However, I keep running into this error message: “Failed to import libcppyy3_9. Please check that ROOT has been built for Python 3.9”.

From there, I checked both versions for ROOT(root-config --python-version [3.10.4]) and Python3 (sudo python3.10 --version[Python 3.10.6]).

However, I still receive the same message below:

ImportError: Failed to import libcppyy3_9. Please check that ROOT has been built for Python 3.9.

Is there something that I might be missing for PyROOT to run?

Regards,

Xavier

_ROOT Version: 6.24/06
_Platform:Ubuntu 22.04.2 LTS
Compiler: Not Provided

[Wile_E_Coyote]

In your anaconda environment, check: python --version ; python3 --version

[Xavier_James]

In the base anaconda environment, the version is python/python3: Python 3.9.16

[Xavier_James]

Sorry, In mypython3 environment it is Python 3.11.0

[Wile_E_Coyote]

Python: No module named 'root'

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 “…

[Xavier_James]

Ok. Thank you! I will make sure to do that now.

[Xavier_James]

root-config --python-version: 3.11.0
python --version: Python 3.11.1

I got it to work. Thank you so much for your guidance. The only thing that is happening is receiving the message below in PyROOT:

The kernel appears to have died. It will restart automatically.