Please edit the Q to show your full stack trace so we get some clues about where the error might be from -- don't go out of your way to make it as hard as possible for us to help you by withholding obviously crucial info!
– Alex MartelliFeb 08 '15 at 03:50
+1 to @AlexMartelli, a more detailed info is necessary for a more detailed answer.
As a quick thought, are you by any chance naming any of your own files _user.py_? This can cause conflicts with some App Engine libraries that already have that name, so if that's the case, please try changing it to, for example, _my_user.py_ and see if that works.
– cjlallanaFeb 09 '15 at 12:04
I was getting this same error just now. Haven't worked it out yet but there is some problem with importing packages names the same in different folders. perhaps. Unfortunately I changed server things since last looking at this part of the project. New Dev App Server but also upgraded to python 2.7.9
– Jay KyburzMay 01 '15 at 07:05
Use older SDK or tweak the current [Answered here](http://stackoverflow.com/a/34311559/2818110).
– Joseph ThomasDec 16 '15 at 14:23