The OpenAI Gym

In order to download and install OpenAI Gym, you can use any of the following options:

$ git clone https://github.com/openai/gym 
$ cd gym 
$ sudo pip install -e . # minimal install

This will do the minimum install. You can later run the following to do a full install:

$ sudo pip install -e .[all]

You can also fetch Gym as a package for different Python versions as follows:

For Python 2.7, you can use the following options:

$ sudo pip install gym              # minimal install 
$ sudo pip install gym[all]         # full install
$ sudo pip install gym[atari]       #for Atari specific environment installation

For Python 3.5, you can use the following options:

$ sudo pip3 install gym              # minimal install 
$ sudo pip3 install gym[all]         # full install
$ sudo pip install gym[atari] #for Atari specific environment installation