Thomas Wouters <thomas@xs4all.net>: The following patch adds "sq_contains" support to rangeobject, and enables the already-written support for sq_contains in listobject and tupleobject. The rangeobject "contains" code should be a bit more efficient than the current default "in" implementation ;-) It might not get used much, but it's not that much to add. listobject.c and tupleobject.c already had code for sq_contains, and the proper struct member was set, but the PyType structure was not extended to include tp_flags, so the object-specific code was not getting called (Go ahead, test it ;-). I also did this for the immutable_list_type in listobject.c, eventhough it is probably never used. Symmetry and all that.

--- a/Objects/tupleobject.c	Wed Jun 14 09:18:32 2000 +0000
+++ b/Objects/tupleobject.c	Thu Jun 15 14:50:20 2000 +0000
@@ -447,6 +447,12 @@
 	&tuple_as_sequence,	/*tp_as_sequence*/
 	0,		/*tp_as_mapping*/
 	(hashfunc)tuplehash, /*tp_hash*/
+	0,		/*tp_call*/
+	0,		/*tp_str*/
+	0,		/*tp_getattro*/
+	0,		/*tp_setattro*/
+	0,		/*tp_as_buffer*/
+	Py_TPFLAGS_DEFAULT, /*tp_flags*/
 };
 
 /* The following function breaks the notion that tuples are immutable: