Binary package “python3-rosgraph” in ubuntu lunar

Tool to print information about the Robot OS computation graph - Python 3

 This package is part of Robot OS (ROS). rosgraph contains the
 rosgraph command-line tool, which prints information about the ROS
 computation graph. It also provides an internal library that can be
 used by graphical tools.
 .
 This package contains the Python 3 library.