While I was installing the ROS (Groovy) , I face the error that said unable to process source or error loading sources or operation time out. I found out that my ROS distribution is out of date so I have to update it. so the following command can be used.
sudo easy_install rosdep
The error obtained previously before was as follows
reading in sources list data from /etc/ros/rosdep/sources.list.d
ERROR: unable to process source [https://github.com/ros/rosdistro/raw/master/rosdep/osx-homebrew.yaml]:
<urlopen error timed out> (https://github.com/ros/rosdistro/raw/master/rosdep/osx-homebrew.yaml)
Hit https://github.com/ros/rosdistro/raw/master/rosdep/gentoo.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/base.yaml
ERROR: error loading sources list:
The read operation timed out
