Patch by Mozhe Zadka, for __contains__ (overloading 'in'). This
patches PySequence_Contains() to check for a valid sq_contains field.
More to follow.
diff --git a/Objects/abstract.c b/Objects/abstract.c
index 5ee53ee..739d9d9 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -1139,7 +1139,14 @@
}
return 0;
}
-
+ if(PyType_HasFeature(w->ob_type, Py_TPFLAGS_HAVE_SEQUENCE_IN)) {
+ sq = w->ob_type->tp_as_sequence;
+ if(sq != NULL && sq->sq_contains != NULL)
+ return (*sq->sq_contains)(w, v);
+ }
+
+ /* If there is no better way to check whether an item is is contained,
+ do it the hard way */
sq = w->ob_type->tp_as_sequence;
if (sq == NULL || sq->sq_item == NULL) {
PyErr_SetString(PyExc_TypeError,