In Python script, how do I set PYTHONPATH?

Question

I know how to set it in my /etc/profile and in my environment variables.

But what if I want to set it during a script? Is it import os, sys? How do I do it?

Answer 1

you can set PYTHONPATH, by os.environ['PATHPYTHON']=/some/path, then you need to call os.system('python') to restart the python shell to make the newly added path effective.