Handle sys.path.append for more convenience

[p-avital]

Hello there,

A rather common pattern in my teams is the use of sys.path.append(os.path.dirname(__file__)) in the entry point to ensure the libs are accessible for imports.

This is a rather easy pattern to find, do you think this could be used to add some folders to the PYTHON_PATH Pylance considers ? This would be useful when the entry point is not located at the workspace's root :)

It is a bit hacky though, so I'd understand if you don't want to do it

[ALLinLLM]

@p-avital That's really useful!

And for me, from dirA.util import xxx is also a common pattern

my_project
|--dirA
| |__util.py
|--dirB
|__main.py

[erictraut]

@p-avital, a static type checker cannot handle dynamic changes to system paths. If you are interested in using the functionality provided by a static type checker, you should avoid using this technique.

@vegetable09, this should already work fine. If you see a specific problem, please file a separate issue. Thanks!

[jakebailey]

Yeah, this would be a hack; this is a bit more evaluation that I think we're comfortable with.

Also see #253, since it seems like you're talking about scripts (which natively have this "add the script's folder to sys.path behavior).