From 9293eb965a2f70a3af849791401f8ec3fc23662b Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Tue, 24 Feb 2009 12:25:32 +0000
Subject: [PATCH] Backport 69934:  Register xrange() as a Sequence.

---
 Lib/_abcoll.py               | 1 +
 Lib/test/test_collections.py | 3 +++
 Misc/NEWS                    | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index 36aca958c76..942a72c0ce7 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -519,6 +519,7 @@ class Sequence(Sized, Iterable, Container):
 Sequence.register(tuple)
 Sequence.register(basestring)
 Sequence.register(buffer)
+Sequence.register(xrange)
 
 
 class MutableSequence(Sequence):
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index e11d999a51e..fe96117ffdd 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -393,6 +393,9 @@ class TestCollectionABCs(ABCTestCase):
             self.failUnless(isinstance(sample(), Sequence))
             self.failUnless(issubclass(sample, Sequence))
         self.failUnless(issubclass(basestring, Sequence))
+        self.failUnless(isinstance(range(10), Sequence))
+        self.failUnless(issubclass(xrange, Sequence))
+        self.failUnless(issubclass(str, Sequence))
         self.validate_abstract_methods(Sequence, '__contains__', '__iter__', '__len__',
             '__getitem__')
 
diff --git a/Misc/NEWS b/Misc/NEWS
index c71c6786cd3..efa19a20a57 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@ What's New in Python 2.6.2
 Core and Builtins
 -----------------
 
+- xrange() is now registered as a Sequence.
+
 - Issue #5247: Improve error message when unknown format codes are
   used when using str.format() with str, unicode, long, int, and
   float arguments.