diff --git a/packages/python/py2pl.c b/packages/python/py2pl.c
index 2b4ace5c4..e708cd7b0 100644
--- a/packages/python/py2pl.c
+++ b/packages/python/py2pl.c
@@ -1,5 +1,55 @@
 
 #include "py4yap.h"
+#include <frameobject.h>
+
+void YAPPy_ThrowError__(const char *file, const char *function, int lineno,
+                      yap_error_number type, term_t where, ...) {
+    va_list ap;
+    char tmpbuf[MAXPATHLEN];
+    YAP_Term wheret = YAP_GetFromSlot(where);
+
+    if (PyErr_Occurred()) {
+        PyErr_Print();
+    } else {
+        PyObject *ptype, *pvalue, *ptraceback;
+        PyObject *pystr, *module_name, *pyth_module, *pyth_func;
+
+        /* See if we can get a full traceback */
+        module_name = PyUnicode_FromString("traceback");
+        pyth_module = PyImport_Import(module_name);
+        Py_DECREF(module_name);
+
+        if (pyth_module != NULL) {
+            pyth_func = PyObject_GetAttrString(pyth_module, "format_exception");
+            if (pyth_func && PyCallable_Check(pyth_func)) {
+                PyObject *pyth_val;
+
+                pyth_val = PyObject_CallFunctionObjArgs(pyth_func, ptype, pvalue, ptraceback, NULL);
+
+                pystr = PyObject_Str(pyth_val);
+                fprintf(stderr, "%s", PyUnicode_AsUTF8(pystr));
+                Py_DECREF(pyth_val);
+            }
+        }
+    }
+    PyFrameObject *fr;
+    if ((fr = PyEval_GetFrame())) {
+        fprintf(stderr, "at frame %p, line %d\n", fr, PyFrame_GetLineNumber(fr));
+    }
+    va_start(ap, where);
+    char *format = va_arg(ap, char *);
+    if (format != NULL) {
+#if HAVE_VSNPRINTF
+        (void)vsnprintf(tmpbuf, MAXPATHLEN - 1, format, ap);
+#else
+        (void)vsprintf(tnpbuf, format, ap);
+#endif
+        // fprintf(stderr, "warning: ");
+        Yap_ThrowError__(file, function, lineno, type, wheret, tmpbuf);
+    } else {
+        Yap_ThrowError__(file, function, lineno, type, wheret);
+    }
+}
 
 static foreign_t repr_term(PyObject *pVal, term_t t) {
   term_t to = PL_new_term_ref(), t1 = PL_new_term_ref();
diff --git a/packages/python/py4yap.h b/packages/python/py4yap.h
index 1e3ddb0de..2e6d747bc 100644
--- a/packages/python/py4yap.h
+++ b/packages/python/py4yap.h
@@ -197,4 +197,9 @@ extern PyObject *PythonLookup(const char *s, PyObject *o);
 
 extern PyObject *PythonLookupSpecial(const char *s);
 
+#define YAPPy_ThrowError(id, inp,  ...)                                                \
+YAPPy_ThrowError__(__FILE__, __FUNCTION__, __LINE__, id, inp, __VA_ARGS__)
+
+extern void YAPPy_ThrowError__(const char *file, const char *function, int lineno,
+                                  yap_error_number type, term_t where, ...);
 #endif
diff --git a/packages/python/pybips.c b/packages/python/pybips.c
index f0e59b75c..732eca6cf 100644
--- a/packages/python/pybips.c
+++ b/packages/python/pybips.c
@@ -698,7 +698,7 @@ static PyObject *structseq_repr(PyObject *iobj) {
 
 PyObject *term_to_nametuple(const char *s, arity_t arity, PyObject *tuple) {
   PyObject *o;
-#if PY_MAJOR_VERSION >= 3
+#if PY_MAJOR_VERSION >= 30
   PyTypeObject *typp;
   PyObject *key = PyUnicode_FromString(s);
   if (py_F2P && PyDict_Contains(py_F2P, key)) {
@@ -716,17 +716,20 @@ PyObject *term_to_nametuple(const char *s, arity_t arity, PyObject *tuple) {
     desc->n_in_sequence = arity;
     if (PyStructSequence_InitType2(typp, desc) < 0)
       return NULL;
-    typp->tp_flags &= ~Py_TPFLAGS_HEAPTYPE;
+    //    typp->tp_flags &= ~Py_TPFLAGS_HEAPTYPE;
+    // typp->tp_flags &= ~Py_TPFLAGS_HAVE_GC;
     // typp->tp_str = structseq_str;
     typp->tp_repr = structseq_repr;
     //     typp = PyStructSequence_NewType(desc);
     // don't do this: we cannot add a type as an atribute.
-    // PyModule_AddObject(py_Main, s, (PyObject *)typp);
+    // PyModule_AddGObject(py_Main, s, (PyObject *)typp);
     if (py_F2P)
       PyDict_SetItem(py_F2P, key, (PyObject *)typp);
     Py_INCREF(typp);
   }
   o = PyStructSequence_New(typp);
+  Py_INCREF(typp);
+  fprintf(stderr, "<<< %p\n",typp);
   arity_t i;
   for (i = 0; i < arity; i++) {
     PyObject *pArg = PyTuple_GET_ITEM(tuple, i);
diff --git a/packages/python/python.c b/packages/python/python.c
index 9899b1161..8cc7ffd71 100644
--- a/packages/python/python.c
+++ b/packages/python/python.c
@@ -125,8 +125,7 @@ static void add_modules(void) {
   py_Yapex = PyImport_AddModule("yap4py.yapi");
   if (py_Yapex)
     Py_INCREF(py_Yapex);
-  //py_F2P = PyObject_GetAttrString(py_Yap, "globals");
-  py_F2P = NULL;
+  py_F2P = PyDict_New();
   init_python_stream();
 }