Compatibility with Python 2.3

dtool/src/interrogatedb/py_panda.h

@@ -64,6 +64,25 @@ typedef int Py_ssize_t;
 
 #endif  // PY_VERSION_HEX
 
+// 2.4 macros which aren't available in 2.3
+#ifndef Py_RETURN_NONE
+inline PyObject* doPy_RETURN_NONE()
+{	Py_INCREF(Py_None); return Py_None; }
+#define Py_RETURN_NONE return doPy_RETURN_NONE()
+#endif
+
+#ifndef Py_RETURN_TRUE
+inline PyObject* doPy_RETURN_TRUE()
+{Py_INCREF(Py_True); return Py_True;}
+#define Py_RETURN_TRUE return doPy_RETURN_TRUE()
+#endif
+
+#ifndef Py_RETURN_FALSE
+inline PyObject* doPy_RETURN_FALSE()
+{Py_INCREF(Py_False); return Py_False;}
+#define Py_RETURN_FALSE return doPy_RETURN_FALSE()
+#endif
+
 using namespace std;
 
 #define PY_PANDA_SMALLER_FOOTPRINT  1

panda/src/event/pythonTask.cxx

@@ -378,6 +378,7 @@ do_python_task() {
       Thread::get_current_thread()->call_python_func(_function, args);
     Py_DECREF(args);
 
+#ifdef PyGen_Check
     if (result != (PyObject *)NULL && PyGen_Check(result)) {
       // The function has yielded a generator.  We will call into that
       // henceforth, instead of calling the function from the top
@@ -392,6 +393,7 @@ do_python_task() {
       _generator = result;
       result = NULL;
     }
+#endif
   }
 
   if (_generator != (PyObject *)NULL) {
@@ -597,7 +599,7 @@ call_function(PyObject *function) {
     PyObject *self = 
       DTool_CreatePyInstanceTyped(this, Dtool_TypedReferenceCount,
                                   true, false, get_type_index());
-    PyObject *args = PyTuple_Pack(1, self);
+    PyObject *args = Py_BuildValue("(O)", self);
     Py_DECREF(self);
     
     PyObject *result = PyObject_CallObject(function, args);