March 1, 2012
9:11 a.m.
Problem: if you implement a frozendict type inheriting from dict in Python, it is still possible to call dict methods (e.g. dict.__setitem__()). To fix this issue, pysandbox removes all dict methods modifying the dict: __setitem__, __delitem__, pop, etc. This is a problem because untrusted code cannot use these methods on valid dict created in the sandbox.
You can redefine dict.__setitem__.
Ah? It doesn't work here.
dict.__setitem__=lambda key, value: None Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: can't set attributes of built-in/extension type 'dict'
Victor