[cchianel]

CPython bytecode changes behaviour for no reason and very suddenly, so you will be vulnerable to changes in Python language versions. A few from the top of my head:

- In Python 3.10, jumps changed from absolute indices to relative indices

- In Python 3.11, cell variables index is calculated differently for cell variables corresponding to parameters and cell variables corresponding to local variables

- In Python 3.11, MAKE_FUNCTION has the code object at the TOS instead of the qualified name of the function

For what it's worth, I created a detailed behaviour of each opcode (along with example Python sources) here: https://github.com/TimefoldAI/timefold-solver/blob/main/pyth... (for up to Python 3.11).