I understand the parameters to Python functions are passed by reference: def foo(a): a = a + 1
Will change the value of a in the calling function. How do I implement the equivalent in C when extending Python? I know how to write a function that can be called from Python and I know how to use PyArg_ParseTuple to get the value of a. But how do I update the value of a in C? I tried (greatly simplified): PyObject *a; int value; PyArg_ParseTuple(args, "O", &a); value = PyLong_AsLong(a); value++; a = PyLong_FromLong(value); but this doesn't work. Any suggestions? Note that I am trying to wrap an existing C based API as closely as possible, so I can't return the value using return (this example is greatly simplified and I'm already using the return value for other things). Thanks! Andy -- http://mail.python.org/mailman/listinfo/python-list
