Generally, you will install PyABSA v2, but if you have legacy code for v1, you can install PyABSA v1. The last version of PyABSA v1.x is v1.16.27.
To use PyABSA, install the latest version from pip or source code:
pip install -U pyabsa
git clone https://github.com/yangheng95/PyABSA --depth=1
cd PyABSA
python setup.py install
!pip install -U pyabsa