No module named msg

edit

Hello,

I am using an Arduino Uno with a Raspberry Pi on ROS indigo. When I run this command : rosrun rosserial_python serial_node.py

I don't understand why I get this error message :

pi@raspberrypi:~/catkin_ws/src $ rosrun rosserial_python serial_node.py

Traceback (most recent call last):

File "/home/pi/catkin_ws/src/rosserial/rosserial_python/nodes/serial_node.py", line 40, in <module> import rosserial_python

File "/home/pi/catkin_ws/devel/lib/python2.7/dist-packages/rosserial_python/__ init__ .py", line 35, in <module> exec(__fh.read())

File "<'string'>", line 1, in <'module'>

File "/home/pi/catkin_ws/src/rosserial/rosserial_python/src/rosserial_python/SerialClient.py", line 47, in <'module'>

from rosserial_msgs.msg import *

ImportError : No module named msg

And I also don't understand where my script is looking for when running 'from rosserial_msgs.msg import*' line in python. In :

• /home/pi/catkin_ws/src/rosserial/rosserial_msgs/msg

Or in :

• /usr/local/lib/python2.7/dist-packages

Or somewhere else ?

Regards,

Matthieu