Binary package “python3-roslaunch” in ubuntu cosmic

roslaunch tool for Robot OS - Python 3

 This package is part of Robot OS (ROS). roslaunch is a tool for
 easily launching multiple ROS nodes locally and remotely via SSH, as
 well as setting parameters on the Parameter Server. It includes
 options to automatically respawn processes that have already died.
 roslaunch takes in one or more XML configuration files (with the
 launch extension) that specify the parameters to set and nodes to
 launch, as well as the machines that they should be run on.
 This package contains the Python 3 library.