[Setup] Best way to get the intersection of (2) groups

Denis Bitouzé dbitouze at wanadoo.fr
Thu Mar 17 14:07:34 UTC 2011

Unfortunately, I can't use (frozen)set (I'm not hosting the Plone

ImportError: import of "Set" from "sets" is unauthorized. You are not
allowed to access 'Set' in this context 


  1. loops are OK :)

  2. thank you, Bastian and Raphael.

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