How to install open-ai gym and keras on ubuntu 16.04?

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Hello, I'm using ROS kinetic on ubuntu 16.04.

I'm planning to apply some deep learning skills into my ROS project with Keras and Open-Ai gym.

Honestly, I'm not familiar with Ubuntu ROS deep learning, and I've never used the above modules on ubuntu.

As far as I've searched on google, I can install them through here.

But How about Keras??

What I want to do are

from gym import spaces

and

from keras.models import Sequential

Anyone who is working one of these modules on ROS ubuntu, would you please give me helpful advice?

Thanks in advance :)