python rospkg can't find all my packages

edit

The ROS command line tools seems to work just fine. Why doesn't the python script show all the packages and why doesn't it give me a version number?

test.py

#!/usr/bin/python
import rospkg
ros_root = rospkg.get_ros_root()
print ("ROS root is " , ros_root)
p = rospkg.get_ros_paths()
print("ROS paths ", p)
l = rospkg.RosStack().list()
print ("List of packages is " , l)
v = rospkg.RosStack().get_stack_version('common_msgs')
print ("Version is " , v)

Running it:

$ test.py  
('ROS root is ', '/opt/ros/kinetic/share/ros')  
('ROS paths ', ['/opt/ros/kinetic/share/ros', '/home/cellula/auv/src', '/opt/ros/kinetic/share'])  
('List of packages is ', ['gazebo_ros_pkgs', 'ros_tutorials', 'nodelet_core', 'geometry_tutorials', 'roscpp_core', 'viz', 'ros', 'vision_opencv', 'perception_pcl', 'rqt_common_plugins', 'image_pipeline', 'desktop', 'rqt_robot_plugins', 'ros_base', 'image_common', 'ros_core', 'perception', 'bond_core', 'common_tutorials', 'ros_comm', 'simulators', 'executive_smach', 'common_msgs', 'image_transport_plugins', 'robot_model', 'visualization_tutorials', 'laser_pipeline', 'robot', 'geometry', 'diagnostics', 'desktop_full'])  
('Version is ', None)

rospack list:

actionlib /opt/ros/kinetic/share/actionlib  
actionlib_msgs /opt/ros/kinetic/share/actionlib_msgs  
actionlib_tutorials /opt/ros/kinetic/share/actionlib_tutorials  
advnav_fog /home/cellula/auv/src/advnav_fog  
angles /opt/ros/kinetic/share/angles  
bond /opt/ros/kinetic/share/bond  
bondcpp /opt/ros/kinetic/share/bondcpp  
bondpy /opt/ros/kinetic/share/bondpy  
camera_calibration /opt/ros/kinetic/share/camera_calibration  
camera_calibration_parsers /opt/ros/kinetic/share/camera_calibration_parsers  
camera_info_manager /opt/ros/kinetic/share/camera_info_manager  
catkin /opt/ros/kinetic/share/catkin  
class_loader /opt/ros/kinetic/share/class_loader  
cmake_modules /opt/ros/kinetic/share/cmake_modules  
collada_parser /opt/ros/kinetic/share/collada_parser  
collada_urdf /opt/ros/kinetic/share/collada_urdf  
compressed_depth_image_transport /opt/ros/kinetic/share/compressed_depth_image_transport  
compressed_image_transport /opt/ros/kinetic/share/compressed_image_transport  
control_msgs /opt/ros/kinetic/share/control_msgs  
cpp_common /opt/ros/kinetic/share/cpp_common  
crl_cmn /home/cellula/auv/src/crl_cmn  
crl_comms /home/cellula/auv/src/crl_comms  
crl_distributed_io /home/cellula/auv/src/crl_distributed_io  
crl_logic /home/cellula/auv/src/crl_logic  
crl_motion_controllers /home/cellula/auv/src/crl_motion_controllers  
crl_msgs /home/cellula/auv/src/crl_msgs  
crl_navigation /home/cellula/auv/src/crl_navigation  
crl_wgfd6 /home/cellula/auv/src/crl_wgfd6  
cv_bridge /opt/ros/kinetic/share/cv_bridge  
depth_image_proc /opt/ros/kinetic/share/depth_image_proc  
diagnostic_aggregator /opt/ros/kinetic/share/diagnostic_aggregator  
diagnostic_analysis /opt/ros/kinetic/share/diagnostic_analysis  
diagnostic_common_diagnostics /opt/ros/kinetic/share/diagnostic_common_diagnostics  
diagnostic_msgs /opt/ros/kinetic/share/diagnostic_msgs  
diagnostic_updater /opt/ros/kinetic/share/diagnostic_updater  
diamond_ir104 /home/cellula/auv/src/diamond_ir104  
dynamic_reconfigure /opt/ros/kinetic/share/dynamic_reconfigure  
eigen_conversions /opt/ros/kinetic/share/eigen_conversions  
eigen_stl_containers /opt/ros/kinetic/share/eigen_stl_containers  
filters /opt/ros/kinetic/share/filters  
gazebo_dev /opt/ros/kinetic/share/gazebo_dev  
gazebo_msgs /opt/ros/kinetic/share/gazebo_msgs  
gazebo_plugins /opt/ros/kinetic/share/gazebo_plugins  
gazebo_ros /opt/ros/kinetic/share/gazebo_ros  
gencpp /opt/ros/kinetic/share/gencpp  
geneus /opt/ros/kinetic/share/geneus  
genlisp /opt/ros/kinetic/share/genlisp  
genmsg /opt/ros/kinetic/share/genmsg  
gennodejs /opt/ros/kinetic/share/gennodejs  
genpy /opt/ros/kinetic/share/genpy  
geometric_shapes /opt/ros/kinetic/share/geometric_shapes  
geometry_msgs /opt/ros/kinetic/share/geometry_msgs  
gl_dependency /opt/ros/kinetic/share/gl_dependency  
gnss_receiver /home/cellula/auv/src/gnss_receiver  
gps_common /home/cellula/auv/src/gps_umd/gps_common    
image_geometry /opt/ros/kinetic/share/image_geometry  
image_publisher /opt/ros/kinetic/share/image_publisher  
image_rotate /opt/ros/kinetic/share/image_rotate  
image_transport /opt/ros/kinetic/share/image_transport    
image_view /opt/ros/kinetic/share/image_view    
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