Dummy Python VM - a small example of running your Python programs... in Python

dummy_python_vm.py

import dis

source_py = 'my_best_code.py'
stack = []
namespace = {
    'print': print,
}

with open(source_py) as f_source:
    source_code = f_source.read()

byte_code = compile(source_code, source_py, 'exec')
code = dis.Bytecode(byte_code)

for op in code:
    if op.opname == 'LOAD_CONST':
        stack.append(op.argval)
    elif op.opname == 'STORE_NAME':
        value = stack.pop()
        namespace[op.argval] = value
    elif op.opname == 'LOAD_NAME':
        value = namespace[op.argval]
        stack.append(value)
    elif op.opname == 'BINARY_ADD':
        b = stack.pop()
        a = stack.pop()
        stack.append(a + b)
    elif op.opname == 'CALL_FUNCTION':
        value = stack.pop()
        func = stack[-1]
        func(value)
    elif op.opname == 'POP_TOP':
        stack.pop()
    elif op.opname == 'RETURN_VALUE':
        print(f'Program finished with value: {stack.pop()}')

my_best_code.py

a = 5
b = 6
c = a + b

print(c + 1)