the ".venv/bin/activate" script is rarely useful outside blog posts. Instead, just have a "bin/run-main" script set PYTHONPATH to point to the source files in

the ".venv/bin/activate" script is rarely useful outside blog posts. Instead, just have a "bin/run-main" script set PYTHONPATH to point to the source files in your project, then call '.venv/bin/python3 src/python/some/where/file/name.py "${@}"' to run it. YMMV. HAND. IANAL.