/usr/lib/python2.7/dist-packages/sensor_msgs/msg/ is in python-sensor-msgs 1.12.5-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_BatteryState.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_CameraInfo.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_ChannelFloat32.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_CompressedImage.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_FluidPressure.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_Illuminance.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_Image.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_Imu.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_JointState.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_Joy.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_JoyFeedback.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_JoyFeedbackArray.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_LaserEcho.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_LaserScan.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_MagneticField.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_MultiDOFJointState.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_MultiEchoLaserScan.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_NavSatFix.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_NavSatStatus.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_PointCloud.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_PointCloud2.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_PointField.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_Range.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_RegionOfInterest.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_RelativeHumidity.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_Temperature.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/_TimeReference.py
/usr/lib/python2.7/dist-packages/sensor_msgs/msg/__init__.py