Index: Python/ceval.c
===================================================================
--- Python/ceval.c	(révision 84514)
+++ Python/ceval.c	(copie de travail)
@@ -1563,7 +1563,30 @@
         TARGET(BINARY_SUBSCR)
             w = POP();
             v = TOP();
+            if (PyLong_CheckExact(w)) {
+                int is_tuple = PyTuple_CheckExact(v);
+                if (is_tuple || PyList_CheckExact(v)) {
+                    Py_ssize_t i = -1;
+                    Py_ssize_t vlen = Py_SIZE(v);
+                    Py_ssize_t ndigits = Py_SIZE(w);
+                    if (ndigits == 0)
+                        i = 0;
+                    else if (ndigits == 1)
+                        i = ((PyLongObject *) w)->ob_digit[0];
+                    else if (ndigits == -1)
+                        i = vlen - ((PyLongObject *) w)->ob_digit[0];
+                    if (i >= 0 && i < vlen) {
+                        if (is_tuple)
+                            x = PyTuple_GET_ITEM(v, i);
+                        else
+                            x = PyList_GET_ITEM(v, i);
+                        Py_INCREF(x);
+                        goto BINARY_SUBSCR_end;
+                    }
+                }
+            }
             x = PyObject_GetItem(v, w);
+        BINARY_SUBSCR_end:
             Py_DECREF(v);
             Py_DECREF(w);
             SET_TOP(x);