bpo-29878: Add global instances of int for 0 and 1. (#852)

1 files changed, 4 insertions, 7 deletions

diff --git a/Objects/sliceobject.c b/Objects/sliceobject.c
index d41ac105f6..ebc44642fe 100644
--- a/Objects/sliceobject.c
+++ b/Objects/sliceobject.c
@@ -374,9 +374,8 @@ _PySlice_GetLongIndices(PySliceObject *self, PyObject *length,
 
     /* Convert step to an integer; raise for zero step. */
     if (self->step == Py_None) {
-        step = PyLong_FromLong(1L);
-        if (step == NULL)
-            goto error;
+        step = _PyLong_One;
+        Py_INCREF(step);
         step_is_negative = 0;
     }
     else {
@@ -404,10 +403,8 @@ _PySlice_GetLongIndices(PySliceObject *self, PyObject *length,
             goto error;
     }
     else {
-        lower = PyLong_FromLong(0L);
-        if (lower == NULL)
-            goto error;
-
+        lower = _PyLong_Zero;
+        Py_INCREF(lower);
         upper = length;
         Py_INCREF(upper);
     }