Pythonnet problem importing modules on MAC #2366

In windows, I put my .py files in the same folder as the c# .exe and the system has no problem with the line:

            dynamic theModule = Py.Import(scriptName);

When I run on the MAC, the same line fails with a module “No module named…”. I don’t quite understand how pathing works within pythonnet. Even under windows, a line:

root.iconbitmap = "iconsmall.ico"    

fails when the script is called from c# but works properly when the script is run directly in python.

I have tried using pythonengine.PythonPath= to set to the folder where all the files exist but no help. I have tried setting environment variables for path and pythonpath but no help. I have tried packaging and pip installing my .py files and then imports work properly. But is clearly the wrong way to do things. I have read all the docs I could find related to pythonnet and/or python pathing but couldn’t’ find a solution.

Clearly, there is a pathing issue but I can’t figure out how and where to set the paths to make things work.
Any insight would be greatly appreciated.