[Python-Dev] Capabilities in Python

[Guido van Rossum]

> Really, Zope proxies are on about the same level as bound methods.

Another difference is that proxies were *designed* for securing off
all access.  Bound methods have introspection facilities which allow
you to go around them.  Restricted execution tries to fence off those
introspection facilities, but there may be a hole in the fence.

--Guido van Rossum (home page: http://www.python.org/~guido/)