Problem with importing Python file in Visual Studio Code

[DXav]

Hello here ! I'm learning how to code starting with Python, and I'm facing a problem trying to import a file as a module. With this code :

import os
import sys
sys.path.append(os.getcwd()+"\launch")
import launch as l

I'm getting the issue "Import "launch" could not be resolved", and if I execute the script, the error "ModuleNotFoundError : No module named 'launch'". I'm struggling with this for a few hours now, and I'm quite desperate, so thanks in advance for your answers !

Of course, with the command :

os.popen(os.getcwd()+"\launch")

I can open my file, so it's not a problem of wrong path.