Avoid Python creating .pyc files

Edit the ‘site-packages/usercustomize.py‘ and add this code:

import sys
 
sys.dont_write_bytecode = True

to make this apply to all your scripts.

For me this directory was

~/.virtualenvs/{my-envs}/lib/python2.7/site-packages

but I had to create ‘usercustomize.py‘ because it didn’t exist.