[Python-ideas] Looking for people interested in a Python register virtual machine project

[Skip Montanaro]

> In the "Object Lifetime" section you say "registers should be cleared upon last reference". That isn't safe, since there can be hidden dependencies on side effects of __del__, e.g.:
>
>     process_objects = create_pipeline()
>     output_process = process_objects[-1]
>     return output_process.wait()
>
> If the process class terminates the process in __del__ (PyQt5's QProcess does), then implicitly deleting process_objects after the second line will break the code.

Yeah, that is old writing, so is probably less clear (no pun intended)
than it should be. In frame_dealloc, Py_CLEAR is called for
stack/register slots instead of just Py_XDECREF. Might not be
necessary.

Skip