From: Raymond Hettinger <python@rcn.com>
Date: Thu, 4 Feb 2016 10:46:16 +0000 (-0800)
Subject: Add early-out for the common case where kwds is NULL (gives 1.1% speedup).
X-Git-Tag: v3.6.0a1~653
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f50215412cdc41b7845a6c0bb040a8f3521a0b84;p=python

Add early-out for the common case where kwds is NULL (gives 1.1% speedup).
---

diff --git a/Objects/setobject.c b/Objects/setobject.c
index 8cb3f364c5..c9834a89e2 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -1088,7 +1088,8 @@ frozenset_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
     PyObject *iterable = NULL, *result;
 
-    if (type == &PyFrozenSet_Type && !_PyArg_NoKeywords("frozenset()", kwds))
+    if (kwds != NULL && type == &PyFrozenSet_Type
+        && !_PyArg_NoKeywords("frozenset()", kwds))
         return NULL;
 
     if (!PyArg_UnpackTuple(args, type->tp_name, 0, 1, &iterable))
@@ -1130,7 +1131,7 @@ PySet_Fini(void)
 static PyObject *
 set_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
-    if (type == &PySet_Type && !_PyArg_NoKeywords("set()", kwds))
+    if (kwds != NULL && type == &PySet_Type && !_PyArg_NoKeywords("set()", kwds))
         return NULL;
 
     return make_new_set(type, NULL);