An implementation of the core language semantics - without any modules or file operations would be dead useful.
It could replace some of the function of the long dead rexec modules as well as support projects like this.
Securing a custom build of the CPython interpreter would probably be significantly easier than designing a 'secure mode' that ran on top of the standard version. The former might even be a stepping stone towards the latter.
Still not easy though (the main task would be to prevent Python code from accessing the OS, while still allowing module imports to work).
Cheers, Nick.
-- Nick Coghlan | [EMAIL PROTECTED] | Brisbane, Australia --------------------------------------------------------------- http://boredomandlaziness.skystorm.net -- http://mail.python.org/mailman/listinfo/python-list