UserDict

[jayvdb]

Python 2 UserDict isnt fixed.

[graingert]

six...	old	new
UserDict	UserDict.UserDict	collections.UserDict
UserList	UserList.UserList	collections.UserList
UserString	UserString.UserString	collections.UserString

[graingert]

looks like they were commented out by @brettcannon in 39816c9#diff-3fdceef3e184860491d74b794f086590R58-R60

[jayvdb]

Ya, futurize also has a half-done approach (based on comments in the code), and broken PythonCharmers/python-future#572 I'm curious about why it has proven to be difficult.