python 3.5 and windows 10

I installed open cv using this command :

pip install opencv_python-3.1.0-cp35-cp35m-win_amd64.whl

This command in python works fine :

import cv2

But when i want to import cv2.cv :

import cv2.cv as cv

This error comes up :

import cv2.cv as cv
ImportError: No module named 'cv2.cv'; 'cv2' is not a package

So what is the problem and how can i fix it?

as @Miki said :

cv2.cv has been removed in OpenCV3 and functions have changed

And this is OpenCV3 Documention:https://docs.opencv.org/3.0-beta/index.html