Issue: Installation Issue with ROS

[Maxime-brs]

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
• Python version: 3.6.10
• Installed using pip or ROS: ROS

I have been trying to install the ROS package (following https://berkeleyautomation.github.io/gqcnn/install/install.html#ros-installation).
In order to use catkin, i have installed ROS package (http://wiki.ros.org), but I realised that you advise using Ubuntu 16.04 (so ROS Kinetic, since it's the only ROS version supporting Ubuntu 16.04), but ROS Kinetic is using python 2.7 and not higher.
And again you advise using python 3.5/3.6/3.7.

Thus i wanted to know if with ROS, you are using python 2.7, or you installed catkin in a different way ?

Thank you for your time !