Binary package “python3-rospkg” in ubuntu focal

Robot OS package library (Python 3)

 This package is part of Robot OS (ROS). It is a library for
 retrieving information about ROS packages and stacks. The rospkg
 Python module provides basic utilities for querying information about
 ROS packages, stacks, and distributions. There are several basic
 APIs: ROS environment, RosPack/RosStack, OS detection, and
 distributions.
 .
 This package installs the library for Python 3.