Index: Modules/_heapqmodule.c
===================================================================
--- Modules/_heapqmodule.c	(revision 66974)
+++ Modules/_heapqmodule.c	(working copy)
@@ -11,25 +11,14 @@
 /* Older implementations of heapq used Py_LE for comparisons.  Now, it uses
    Py_LT so it will match min(), sorted(), and bisect().  Unfortunately, some
    client code (Twisted for example) relied on Py_LE, so this little function
-   restores compatability by trying both.
+   used to provide compatability by trying both.
+   We break that compatibility in this version now, for performance, since it
+   can speed up heap sorting of simple objects (such as floats) threefold.
 */
 static int
 cmp_lt(PyObject *x, PyObject *y)
 {
-	int cmp;
-	static PyObject *lt = NULL;
-
-	if (lt == NULL) {
-		lt = PyString_FromString("__lt__");
-		if (lt == NULL)
-			return -1;
-	}
-	if (PyObject_HasAttr(x, lt))
-		return PyObject_RichCompareBool(x, y, Py_LT);
-	cmp = PyObject_RichCompareBool(y, x, Py_LE);
-	if (cmp != -1)
-		cmp = 1 - cmp;
-	return cmp;
+	return PyObject_RichCompareBool(x, y, Py_LT);
 }
 
 static int