[py] raise an exception when reading source failed

diff --git a/python/ext/py-source.c b/python/ext/py-source.c
index 7687fbd..d3c28e8 100644 (file)
--- a/python/ext/py-source.c
+++ b/python/ext/py-source.c
@@ -436,6 +436,10 @@ Py_source_do(Py_source * self, PyObject * args)
   /* compute _do function */
   aubio_source_do (self->o, &(self->c_read_to), &read);
 
+  if (PyErr_Occurred() != NULL) {
+    return NULL;
+  }
+
   outputs = PyTuple_New(2);
   PyTuple_SetItem( outputs, 0, self->read_to );
   PyTuple_SetItem( outputs, 1, (PyObject *)PyLong_FromLong(read));
@@ -457,6 +461,10 @@ Py_source_do_multi(Py_source * self, PyObject * args)
   /* compute _do function */
   aubio_source_do_multi (self->o, &(self->c_mread_to), &read);
 
+  if (PyErr_Occurred() != NULL) {
+    return NULL;
+  }
+
   outputs = PyTuple_New(2);
   PyTuple_SetItem( outputs, 0, self->mread_to);
   PyTuple_SetItem( outputs, 1, (PyObject *)PyLong_FromLong(read));