You have something to sell? Post it! You want to buy something? Search it! Barter brings in a platform for students to sell and buy stuff from each other.
Activate the provided virtual environment by navigating to where venv folder is saved and typing source venv/bin/activate if you are on MacOS or venv/bin/activate if on Windows.
To deactivate the virtual environment, simply type deactivate from any directory. The interpreter will run that command from the virtual environment's bin directory.