Hasta La Motion!

Where do I put my init.py to be access by all users?
I have a directory with all my settings (gizmos, python, menu.py) on the network. I set my init.py to go check in that directory. Everything work fine for me. If I want the others users to get my gizmos… I tell them to copy my init.py in their directory (.nuke). Is there somewhere else I could put it so they don’t have to copy it?
And I also would like not to bother everyone if I change a python script and it’s not working, so that I could test my script before giving it to everybody. How could I do it?
Thanks for your help