[Python-Dev] Some news from my sandbox project

Greg Ewing greg.ewing at canterbury.ac.nz
Sun Sep 19 00:59:30 CEST 2010

Robert Collins wrote:

> __builtins__ is in everyone's global namespace, so if it can be
> mutated, different python programs running in the same sandbox can
> affect each other.

So give each program its own copy of __builtins__.


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