ROOT and Python installation problem

[Beatriz_Ornelas]

Hi ROOT community,

I am facing an issue with Python, which is associated with ROOT. I have installed Python 3.8.10 and ROOT version 6.32.00 on my Windows 8 system (64x bit for both and I have Visual Studio 2022 with Desktop development with C++). On the terminal with C++, ROOT seems to be working fine.

When I try doing ‘import ROOT’ on my Python I get the following message:

C:\root_v6.32.00\bin>python
Python 3.8.10 (tags/v3.8.10:3d8993a, May 3 2021, 11:48:03) [MSC v.1928 64 bit (AMD64)] on win32
Type “help”, “copyright”, “credits” or “license” for more information.

import ROOT
Traceback (most recent call last):
File “”, line 1, in
File “C:\root_v6.32.00\bin\ROOT_init_.py”, line 25, in
import cppyy
File “C:\root_v6.32.00\bin\cppyy_init_.py”, line 81, in
from ._cpython_cppyy import *
File “C:\root_v6.32.00\bin\cppyy_cpython_cppyy.py”, line 22, in
import libcppyy as _backend
ImportError: DLL load failed while importing libcppyy: Impossível localizar o módulo especificado. (Impossible to locate the specified module)

I read about someone in the community with a similar issue who suggested he run thisroot.bat. I did that, but I still got this message.

Could anyone help me out with solving this?

Thank you in advance!

Greetings,
Beatriz

[bellenot]

Welcome to the ROOT Forum!
ROOT v6.32.00 has been built with Python 3.11:

C:\Users\bellenot\Downloads>root-config --version
 6.32.00

C:\Users\bellenot\Downloads>root-config --python3-version
 3.11.2

So you should install Python 3.11 on your system

[bellenot]

P.S. and you have to execute C:\root_v6.32.00\bin\thisroot.bat before starting Python

[Beatriz_Ornelas]

Thank you! It worked