■Explanation
As of 10/16, when trying to install pfcc-extras v0.10.0 in the python3.9 environment and import it, the following error may occur.
The cause seems to be that the latest version (0.84.3rc2) of emmet-core, which is a dependency of pymategen and mp-api, is causing an incompatibility with pymatgen.
Note that in the python3.8 environment, emmet-core==0.68.0 is installed, so no errors occur.
■How to solve
Downgrade emmet-core with the following command.
From terminal
pip uninstall emmet-core
pip install emmet-core==0.84.2
From notebook
!pip uninstall -y emmet-core
!pip install emmet-core==0.84.2
■Restart of kernel
After running `pip install`, you need to restart the Notebook kernel to reflect the installation.
Please click the refresh icon at the top of the Notebook to restart the kernel.
■Confirmed versions
python 3.9
pymatgen 2024.8.9
mp-api 0.42.2