ImportError

edit

Hi all,

I created a catkin package and defined a custom ros msg. I built it with catkin_make. Msg can be seen through rosmsg. But still my node can not import <package_name>.msg

ImportError: No module named blue_tracker.msg

That is the import command line : from blue_tracker.msg import *

Meanwhile there is no problem with ros package path.It can reach all other packages like roslib,rospy,smach..etc. I have alrady given two days to this annoying problem.All suggestions are wellcome.

Any ideas?

[more inforrmation as asked]

System:

         Bodhi 2.4.0 ,  Ros Hydro ,  Python  2.7.3

Ros Package :

         Catkin package "blue_tracker "  with a node trace_face.py

Code : (I blinded out all the parts of code but the ones give error to be able to focus on the problem)

 import roslib
 import roslib
 import rospy
 from sensor_msgs.msg import * # no problem with this line
 from blue_tracker.msg import * # here is the problem

 if __name__ == '__main__':
     rospy.init_node('track_face')
     print "test"



Error message :

Traceback (most recent call last):
  File "/home/bdr/catkin_ws/src/blue_tracker/src/track_face.py", line 14, in  module
    from blue_tracker.msg import 
    ImportError: No module named blue_tracker.msg



CMakeList.txt :


 cmake_minimum_required(VERSION 2.8.3) 
  project(blue_tracker)
  find_package(catkin REQUIRED COMPONENTS
     cv_bridge
     roscpp
     rospy
     sensor_msgs
     std_msgs
     message_generation)
  find_package(OpenCV REQUIRED) 
     add_message_files(
             FILES
              RoisInFrame.msg)
  generate_messages(
              DEPENDENCIES
              sensor_msgs
              std_msgs)

   catkin_package(
              INCLUDE_DIRS include
              #LIBRARIES blue_tracker
             #CATKIN_DEPENDS cv_bridge roscpp rospy sensor_msgs std_msgs
               DEPENDS system_lib blue_tracker)
    include_directories(
               ${catkin_INCLUDE_DIRS}
               ${OpenCV_INCLUDE_DIRS})

     install(PROGRAMS
                 src/track_face.py src/test_tracking.py
                 DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION})