Odd distribute/setuptools issue

’m using the system python 2.6 install on Snow Leopard, and occasionally get this when doing instally-type things:

/Library/Python/2.6/site-packages/virtualenvwrapper/hook_loader.py:16: UserWarning: Module pkg_resources was already imported from /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.pyc, but /Library/Python/2.6/site-packages is being added to sys.path
 import pkg_resources
/Library/Python/2.6/site-packages/virtualenvwrapper/hook_loader.py:16: UserWarning: Module site was already imported from /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site.pyc, but /Library/Python/2.6/site-packages is being added to sys.path
 import pkg_resources

I try to be good about using virtualenv and pip and whatnot, but I probably slipped up somewhere. Either way, I finally got tired of seeing those warnings all the time and actually read them. Throwing caution to the wind, I deleted /System/​Library/​Frameworks/​ Python.framework/​Versions/​2.6/​Extras/​lib/​python/​pkg_resources.pyc and everything seems to be working

Source http://helveticascenario.net/blog/2010/02/odd-distributesetuptools-issue/