Backport 69934:  Register xrange() as a Sequence.
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index 36aca95..942a72c 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -519,6 +519,7 @@
 Sequence.register(tuple)
 Sequence.register(basestring)
 Sequence.register(buffer)
+Sequence.register(xrange)
 
 
 class MutableSequence(Sequence):