All information is stored in the Sqlite database. In the software, books can be added, edited or deleted, sold or rented. Leased books can be managed with either the user name and ID.
First install these packages :
sudo apt install python3-pip python3-venv python3-pyqt5
Then download source code and in source code folder :
python3 -m venv ./venv
source ./venv/bin/activate
pip install -r req.txt
Finally run it :
python3 main.py