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Restricted Python Virtual Machine

Project description

Restricted Python Virtual Machine

Restricted Python Virtual Machine (R-PVM) implemented by pure python.


  • aim for complete safe sandbox
  • designed for Python3.6 bytecode
  • execute one by one
  • good for smart contract of crypto currency
  • No warranty and unstable


  • cannot use MAKE_FUNCTION op (lambda, comprehension and inner fnc)
  • cannot use async/await
  • limit to execute function
  • YOU must select safe function


pip3 install rpvm

How to use

from rpvm.vm import VirtualMachine
from RestrictedPython import safe_builtins, safe_globals
source = """
a = 1
b = 2
c = a + b
code = compile(source, '<example>', 'exec')
b = safe_builtins.copy()
l = dict()
g = safe_globals.copy()
vm = VirtualMachine(code, b, l, g)
steps = 0
max_steps = 500
while not vm.finish and steps < max_steps:
    steps += 1
print("complete?", vm.finish)
print("result", vm.return_value)
print("c is", l['c'])


python3 -m pytest tests



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