Implement Sandboxing for Python snippets

[Randle Taylor]

The user input snippets should be executed in a Python sandbox to prevent unexpected or malicious (not really a concern at this point, but possibly in the future) code from being run.

There are a couple of projects I know of that may be suitable:

[[https://github.com/haypo/pysandbox|PySandbox]]

[[http://pypi.python.org/pypi/RestrictedPython|Zope Restricted Python]]