The __all__ value for 'collections' was missing UserList and UserString.

Lib/collections.py

-__all__ = ['deque', 'defaultdict', 'namedtuple', 'UserDict']
+__all__ = ['deque', 'defaultdict', 'namedtuple', 'UserDict', 'UserList',
+            'UserString']
 # For bootstrapping reasons, the collection ABCs are defined in _abcoll.py.
 # They should however be considered an integral part of collections.py.
 from _abcoll import *

Lib/test/test___all__.py

@@ -44,6 +44,7 @@ class AllTest(unittest.TestCase):
         self.check_all("bdb")
         self.check_all("binhex")
         self.check_all("calendar")
+        self.check_all("collections")
         self.check_all("cgi")
         self.check_all("cmd")
         self.check_all("code")

Misc/NEWS

@@ -21,6 +21,8 @@ Extension Modules
 Library
 -------
 
+- Fix the __all__ setting on 'collections' to include UserList and UserString.
+
 - The sre module has been removed.
 
 - The Queue module has been renamed to queue.