Add a test that Py_IsInitialized() in Py_InitModule4(). See

python-dev discussion.

This should catch future version incompatibilities on Windows.  Alas,
this doesn't help for 1.5 vs. 1.6; but it will help for 1.6 vs. 2.0.

Python/modsupport.c

@@ -47,6 +47,8 @@ Py_InitModule4(char *name, PyMethodDef *methods, char *doc,
 {
 	PyObject *m, *d, *v;
 	PyMethodDef *ml;
+	if (!Py_IsInitialized())
+	    Py_FatalError("Interpreter not initialized (version mismatch?)");
 	if (module_api_version != PYTHON_API_VERSION)
 		fprintf(stderr, api_version_warning,
 			name, PYTHON_API_VERSION, name, module_api_version);