[ros-users] $PYTHONPATH in launch files

[Armin Hornung]

Hi all,


 > Wait... what part of this env variable is portable?
 >
 > <env name="PYTHONPATH"
 > 
value="/home/advait/svn/robot1/src/libraries:/home/advait/svn/robot1/src/libraries/katana:/home/advait/ros/ros/core/roslib/src:/usr/lib/python2.5/site-packages"
 > />
 >
 > If your user name changes on the remote machine, wouldn't your launch
 > file stop working?  It seems that the remote machine's $PYTHONPATH
 > would be more likely to know where all its libraries are than a
 > .launch file, right?

I agree with Hai on this, Advait's example (unintentionally?) shows that 
this does not really help making launch files more portable, but less. 
Re-specifying the PYTHONPATH in the launch file might work as a 
workaround for the current behavior, but this would need to be done with 
a launch file specific for every machine or ros installation path.

What do the ROS developers think on this? Making use of my newly-created 
trac-account, I just created a ticket for this ;)

https://code.ros.org/trac/ros/ticket/2735

Cheers,
Armin


-- 
Armin Hornung                              Albert-Ludwigs-Universität
www.informatik.uni-freiburg.de/~hornunga   Dept. of Computer Science
HornungA at informatik.uni-freiburg.de        Humanoid Robots Lab
Tel.: +49 (0)761-203-8010                  Georges-Köhler-Allee 79
Fax : +49 (0)761-203-8007                  D-79110 Freiburg, Germany