>If you're worried about kids being able to run arbitrary python scripts on your network, then the security problem is not the kids, it's your shitty network.

How is this even possible? Unless your CMS runs on python somewhere and does eval() a lot. Then yes, that is a huge problem. Moreover, why would that stop anything just not called .\+\.py?

If your CMS does `python ${fileIjustdownloadedfromuser}` in a shell then we are in serious trouble.