I followed the tutorial but when launching the program, it writes the following:
SUMMARY
PARAMETERS
/rosdistro: kinetic
/rosversion: 1.12.14
NODES
/
ObiWan (my_package/simple.py)
ROS_MASTER_URI=http://master:11311
ERROR: cannot launch node of type [my_package/simple.py]: can’t locate node [simple.py] in package [my_package]
No processes to monitor
shutting down processing monitor…
… shutting down processing monitor complete
ERROR: cannot launch node of type [my_package/symple.py]: Cannot locate node of type [symple.py] in package [my_package]. Make sure file exists in package path and permission is set to executable (chmod +x)
No processes to monitor
shutting down processing monitor…
… shutting down processing monitor complete