This post assumes you are creating this environment on macOS.
The first step here is to create the virtual environment directory. The command below will install the virtual environment in the current directories venv folder:
python3 -m venv ./venv
This will create a number of files for you, if you
cd into the the venv directory you can list them:
=> cd venv && ls bin include lib pyvenv.cfg
To start the virtual environment execute the
activate executable located in the bin folder of venv:
=> source bin/activate
Running this will pull you into the virtual environment, which you can check by running:
=> which python venv/bin/python
Now you can install the localstack package from within the virtual environment:
=> python3 -m pip install localstack
Once complete check that you have successfully installed localstack by executing the command
localstack in your terminal.
Enjoy installing / configuring things? Then you may enjoy the post Steps to configure Git and remote origin.