From e22072fb11246f125aa9ff7629c832b9e2407ef0 Mon Sep 17 00:00:00 2001
From: Alexander Marshalov <_@marshalov.org>
Date: Tue, 24 Jul 2018 10:58:21 +0700
Subject: bpo-34149: Behavior of the min/max with key=None (GH-8328)

Improve consistency with the signature for sorted(), heapq.nsmallest(), heapq.nlargest(), and itertools.groupby().
---
 Python/bltinmodule.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'Python/bltinmodule.c')

diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 88a4bf991d..7bb5687d9a 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1639,6 +1639,10 @@ min_max(PyObject *args, PyObject *kwds, int op)
         return NULL;
     }
 
+    if (keyfunc == Py_None) {
+        keyfunc = NULL;
+    }
+
     maxitem = NULL; /* the result */
     maxval = NULL;  /* the value associated with the result */
     while (( item = PyIter_Next(it) )) {
-- 
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