From 7692f506e3a6a74228add17b64afc7a46b1a48e1 Mon Sep 17 00:00:00 2001
From: Tom Faulkner <tomfaulkner@gmail.com>
Date: Tue, 10 Jul 2018 21:39:57 -0500
Subject: [PATCH] Dataclasses: Fix example on 30.6.8, add method should receive
 a list rather than an integer. (GH-8038)

Change example function to append rather than add lists.
(cherry picked from commit da5e9476bbfbe61f7661fd22caba1b675e5b4397)

Co-authored-by: Tom Faulkner <tomfaulkner@gmail.com>
---
 Doc/library/dataclasses.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Doc/library/dataclasses.rst b/Doc/library/dataclasses.rst
index 9835c480d0ea55..e9af20a04af167 100644
--- a/Doc/library/dataclasses.rst
+++ b/Doc/library/dataclasses.rst
@@ -533,7 +533,7 @@ Mutable default values
      class C:
          x = []
          def add(self, element):
-             self.x += element
+             self.x.append(element)
 
      o1 = C()
      o2 = C()