Importing underscore modules (undefined symbol)

[mjyb16]

When I attempt to import any function, I get the following type of error:
ModuleNotFoundError: No module named 'casacore.tables._tables'

EDIT: After recompiling with pip install . using github as source, I no longer have the error above, but I still have an import error with undefined symbol:

>>> from casacore.tables import table Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/mjybarth/envs/resolve/lib/python3.8/site-packages/casacore/tables/__init__.py", line 60, in <module> from .msutil import * File "/home/mjybarth/envs/resolve/lib/python3.8/site-packages/casacore/tables/msutil.py", line 29, in <module> from casacore.tables.table import (table, taql, File "/home/mjybarth/envs/resolve/lib/python3.8/site-packages/casacore/tables/table.py", line 40, in <module> from ._tables import (Table, ImportError: /home/mjybarth/envs/resolve/lib/python3.8/site-packages/casacore/tables/_tables.cpython-38-x86_64-linux-gnu.so: undefined symbol: _ZN5boost6python6detail12gcc_demangleEPKc

EDIT 2: This occurs even if I use pip install python-casacore (ie with wheels). Note that I provide pip with the directories to Boost and casacore via :
export LD_LIBRARY_PATH=/cvmfs/soft.computecanada.ca/easybuild/software/2020/avx512/Compiler/intel2020/boost/1.80.0/lib:/home/mjybarth/casa/usr/local/lib

Please let me know how to resolve this issue!

[gmloose]

From your description it is not clear if you try to install from source or not. The recommended way to install python-casacore is to simply run

pip install python-casacore

Make sure that you do not have casacore or python-casacore installed from your package manager, or from a local build. These are almost certain to conflict with the version that pip will install. Also, it is strongly recommended to install python-casacore in a Python virtual environment.

[mjyb16]

Hi, apologies for the unclear description. I have tried both ways of installing and neither worked (I uninstalled in between). I will try a fresh environment at some point, since the existing installation of casacore must have been conflicting with the install of python-casacore.