Confused by virtual environments

I began trying to install this program as per the instructions: sudo apt update && sudo apt install -y python3-venv bluez git git clone https://github.com/kbennett2000/linux-lifepo4-bms-monitor.git cd linux-lifepo4-bms-monitor python3 -m venv venv && source venv/bin/activate pip install -r requirements.txt cp config.example.json config.json # edit config.json with your batteries' MAC addresses python3 dashboard.py It made the virtualenv because after running the 4th line it then says ‘venv’ ...