On 11/18/19 1:15 PM, R.Wieser wrote: > The thing is that the arguments of py_proc1 and py_proc2 are the same, but > for a single argument.
Does this have to be done in the C API? Depending on how this class is used in your Python code, I would just create a new Python class that extends this class defined in the C code. Then it's more a matter of: import cmodule class NewClass(cmodule.OldClass): def my_proc2(self, *args): b=3 self.my_proc1( *((b,) + args) ) #OldClass.my_proc1 Now any instance of NewClass has a method called my_proc2 which calls the my_proc1 from the C API defined class with the extra argument prepended. The "*" notation is to unpack the tuple, which is used when calling another function that takes positional arguments. -- https://mail.python.org/mailman/listinfo/python-list