Is there a public API that allows me to check whether an object is weakly referenceable? I know that you can check the value of the tp_weaklistoffset slot or check for the Py_TPFLAGS_MANAGED_WEAKREF flag to get the answer, but what about having something like:

• PyObject_WeaklyReferenceable or
• PyWeakref_Referenceable

or whatever name fits the situation? This would encapsulate things and keep the extension module developer away from the internal stuff.

https://discuss.python.org/t/weakly-referencable-object/80248