[Python-Dev] PEP 576

Mark Shannon mark at hotpy.org
Tue Jun 26 15:43:59 EDT 2018

Hi all,

Just a reminder that PEP 576 still exists as a lightweight alternative 
to PEP 575/580. It achieves the same goals as PEP 580 but is much smaller.


Unless there is a big rush, I would like to do some experiments as to 
whether the new calling convention should be

typedef (*callptr)(PyObject *func, PyObject *const *stack,
                    Py_ssize_t nargs, PyObject *kwnames);

or whether the increased generality of:

typedef (*callptr)(PyObject *func, PyObject *const *stack,
                    Py_ssize_t nargs, PyObject *kwnames,
                    PyTupleObject *starargs, PyObject *kwdict);

is a worthwhile enhancement.

An implementation can be found here:


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