[Python-Dev] Challenge: Please break this! (a.k.a restricted mode revisited)

[Paul Moore]

On 8 April 2016 at 15:18, Jon Ribbens <jon+python-dev at unequivocal.co.uk> wrote:
> I would be very interested to see if anyone can manage to break it.
> Bugs which are trivially fixable are of course welcomed, but the real
> question is: is this approach basically sound, or is it fundamentally
> unworkable?

What are the limitations? It seems to even block "import" which seems
over-zealous (no import math?)
Paul