[chapter 3, Adding the ROS teleop node] roslaunch diff_wheeled_robot_control keyboard_teleop.launch about mastering_ros

[wkyoun]

There should be catkin_install_python in CMakeLists.txt about diff_wheeled_robot_key node
as http://wiki.ros.org/catkin/CMakeLists.txt indicates

But, nothing is found related to that:

Installing Python Executable Scripts

For Python code, the install rule looks different as there is no use of the add_library() and     add_executable() functions so as for CMake to determine which files are targets and what type of     targets they are. Instead, use the following in your CMakeLists.txt file:

catkin_install_python(PROGRAMS scripts/myscript
  DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION})

[qboticslabs]

@won13y I found the bug. I will update in the repo soon.

I can explain the steps to remove this error

1. Goto scripts folder

2. Change file permission of diff_wheeled_robot_key node using the following command
   chmod +x diff_wheeled_robot_key node

3. Open the script and comment the following like follows

#import roslib
#roslib.load_manifest('turtlebot_teleop')

and run the launch file. It will work

Try and reply if it is worked !! Thanks

[qboticslabs]

@won13y Updated the code !!

[whyscience]

chmod +x solve the problem