Interesting pages about Pypy Sandbox

https://stackoverflow.com/questions/25706978/how-to-create-socket-in-pypy-sandbox
https://stackoverflow.com/questions/13769346/interacting-with-a-sandboxed-pypy-interpreter-secondary-communicate-returns
https://github.com/AdityaOli/Building-and-Breaking-a-Python-Sandbox/blob/master/OS%20Level%20Sandboxing%20using%20PyPy's%20Sandbox.md
https://www.pypy.org/download.html
https://www.programiz.com/python-programming/methods/built-in/exec
https://stackoverflow.com/questions/3068139/how-can-i-sandbox-python-in-pure-python

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