Assuming you have venvs set up for multiple Python versions at e.g. .venv-{VERSION}, you can run something like:
for i in $(ls -a | grep venv); do echo "$i"; echo ""; source $i/bin/activate; python main.py; echo ""; doneRunning with:
3.8.19 3.9.19 3.10.14 3.11.8 3.11.9 3.12.3 yields:
.venv-3.8.19 Hello from foo.bar .venv-3.9.19 Hello from foo.bar .venv-3.10.14 Hello from foo.bar .venv-3.11.8 Hello from foo.bar .venv-3.11.9 Traceback (most recent call last): File ".../main.py", line 33, in <module> print(foo.bar) ^^^^^^^ File "<frozen importlib.util>", line 276, in __getattribute__ AttributeError: module 'foo' has no attribute 'bar' .venv-3.12.3 Traceback (most recent call last): File ".../main.py", line 33, in <module> print(foo.bar) ^^^^^^^ File "<frozen importlib.util>", line 222, in __getattribute__ AttributeError: module 'foo' has no attribute 'bar'