sys.path.append - Beginner having issues opening modules

[Jackpy]

Every time that I want to open a module, do I have to append every time, or is there a way to permanently add the folder that I keep the modules in to the path?

I just started with python and I'm keeping all the exercises from the textbook I'm using in the same folder.

[dwblas]

I add anything additional to the PYTHONPATH system variable in .bashrc, i.e.
export PYTHONPATH=$PYT HONPATH:/usr/lib/python/site-python:/usr/lib64/python/ etc.