Sandboxing Python

[Mark Lawrence]

I was always led to believe that the subject was a difficult thing to 
do, but here 
https://www.reddit.com/r/learnpython/comments/3huz4x/how_to_do_math_inside_raw_input/ 
is a safe solution in only 23 characters, or are there any discernable 
flaws in it?

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My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence

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