I have 2 questions:
1. Is there any sort of call_object() interface that allows the caller
to specify what 'self' object to work on (takes an arbitrary object * pointer).
2. Is there any way to pass in (from Python to C) a handle to the basic
list initializer, whatever is onvoked when you type  in the interpreter.
If (1) is not available then it will be necessary to register a different
list append function for each and every list to be manipulated. Seems like
a waste of time and a major hassle.
If (2) is not available then it will be necessary to write a one-line function
that returns an empty list and pass a handle to that as the callback to use
from C. That's not difficult, but it seems like a needless indirection.
or would it be more correct to call the python c functions directly? Any