From b72e21b9ab8021b7cbb7e0007d1bf80d533bce15 Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Fri, 25 Mar 2016 02:29:59 -0700 Subject: [PATCH] Speed-up construction of empty sets by approx 12-14%. --- Objects/setobject.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/Objects/setobject.c b/Objects/setobject.c index c9834a89e2..8e22b69020 100644 --- a/Objects/setobject.c +++ b/Objects/setobject.c @@ -2015,11 +2015,12 @@ set_init(PySetObject *self, PyObject *args, PyObject *kwds) if (!PyAnySet_Check(self)) return -1; - if (PySet_Check(self) && !_PyArg_NoKeywords("set()", kwds)) + if (kwds != NULL && PySet_Check(self) && !_PyArg_NoKeywords("set()", kwds)) return -1; if (!PyArg_UnpackTuple(args, Py_TYPE(self)->tp_name, 0, 1, &iterable)) return -1; - set_clear_internal(self); + if (self->fill) + set_clear_internal(self); self->hash = -1; if (iterable == NULL) return 0; -- 2.50.0