From 4441778c263c075675950c8488882ee4ddac4c12 Mon Sep 17 00:00:00 2001
From: Sergey Fedoseev <fedoseev.sergey@gmail.com>
Date: Mon, 17 Sep 2018 19:54:37 +0500
Subject: [PATCH] Simplified ListMixin.sort().

---
 django/contrib/gis/geos/mutable_list.py | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/django/contrib/gis/geos/mutable_list.py b/django/contrib/gis/geos/mutable_list.py
index 90fcc6d587..2d62e7bfa4 100644
--- a/django/contrib/gis/geos/mutable_list.py
+++ b/django/contrib/gis/geos/mutable_list.py
@@ -210,19 +210,9 @@ class ListMixin:
         "Standard list reverse method"
         self[:] = self[-1::-1]
 
-    def sort(self, cmp=None, key=None, reverse=False):
+    def sort(self, key=None, reverse=False):
         "Standard list sort method"
-        if key:
-            temp = [(key(v), v) for v in self]
-            temp.sort(key=lambda x: x[0], reverse=reverse)
-            self[:] = [v[1] for v in temp]
-        else:
-            temp = list(self)
-            if cmp is not None:
-                temp.sort(cmp=cmp, reverse=reverse)
-            else:
-                temp.sort(reverse=reverse)
-            self[:] = temp
+        self[:] = sorted(self, key=key, reverse=reverse)
 
     # ### Private routines ###
     def _rebuild(self, newLen, newItems):