From: Raymond Hettinger <python@rcn.com>
Date: Mon, 18 May 2009 15:35:26 +0000 (+0000)
Subject: Issue 6037: MutableSequence.__iadd__ should return self.
X-Git-Tag: v3.1rc1~105
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c384b226d765d5f57a909df8da3f4fcdfb4b7246;p=python

Issue 6037: MutableSequence.__iadd__ should return self.
---

diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index 7b01178a05..a60d91e7cb 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -598,6 +598,7 @@ class MutableSequence(Sequence):
 
     def __iadd__(self, values):
         self.extend(values)
+        return self
 
 MutableSequence.register(list)
 MutableSequence.register(bytearray)  # Multiply inheriting, see ByteString