Hi.
I am trying to import ROOT in python3 (3.9.18) in a Jupyter notebook using VSCode.
My local machine is Mac, running on lxplus server.
I verified that root was compiled for this python version and that I can import ROOT from console.
When doing import ROOT from the notebook I get the following error.
{
"name": "RuntimeError",
"message": "property type mismatch or assignment not allowed",
"stack": "---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
Cell In [3], line 1
----> 1 import ROOT
2 import Garfield
File /usr/lib64/python3.9/site-packages/ROOT/__init__.py:70
67 import sys
68 from ._facade import ROOTFacade
---> 70 _root_facade = ROOTFacade(sys.modules[__name__], _is_ipython)
71 sys.modules[__name__] = _root_facade
73 # Configure meta-path finder for ROOT namespaces, following the Python
74 # documentation and an example:
75 #
76 # * https://docs.python.org/3/library/importlib.html#module-importlib.abc
77 #
78 # * https://python.plainenglish.io/metapathfinders-or-how-to-change-python-import-behavior-a1cf3b5a13ec
File /usr/lib64/python3.9/site-packages/ROOT/_facade.py:95, in ROOTFacade.__init__(self, module, is_ipython)
92 self.__loader__ = module.__loader__
94 # Inject gROOT global
---> 95 self.gROOT = _gROOTWrapper(self)
97 # Expose some functionality from CPyCppyy extension module
98 self._cppyy_exports = [
99 \"nullptr\",
100 \"bind_object\",
(...)
106 \"SetOwnership\",
107 ]
File /usr/lib64/python3.9/site-packages/ROOT/_facade.py:221, in ROOTFacade._finalSetup.<locals>.<lambda>(self, name, val)
219 # Redirect lookups to cppyy's global namespace
220 self.__class__.__getattr__ = self._fallback_getattr
--> 221 self.__class__.__setattr__ = lambda self, name, val: setattr(cppyy.gbl, name, val)
223 # Register custom converters and executors
224 self._register_converters_and_executors()
RuntimeError: property type mismatch or assignment not allowed"
}
Thank you for the help.
LM
_ROOT Version: 6.32.06
_Platform: Red Hat Enterprise Linux 9.4
_Compiler: g++ (GCC) 11.4.1 20231218
_Python: 3.9.18
