Error starting .py with roslaunch

asked 2013-09-19 00:29:44 -0600

mike.sru
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updated 2014-01-28 17:18:00 -0600

ngrennan
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Hi,

I am trying to start a python script to allow keyboard control of two dynamixel MX28T servo motors.

But when I try

roslaunch pantilt pt_keyboard.py

I get the following error message.

"Invalid roslaunch XML syntax: not well-formed (invalid token): line 1, column 1"

I thought first I could not run a .py file with roslaunch. But I saw another guy doing it. I already googled for a solution, but haven't found the answer for my specific problem.

Anybody who has an Idea?

Thanks for helping!

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answered 2013-09-19 01:56:51 -0600

Boris

3060 ●32 ●57 ●83 http://people.idsia.ch/~gromov

roslaunch is supposed to be used with XML launch files. However you attempting to launch a Python script.

To run Python scripts and binary executables use rosrun instead. It also might be necessary to add 'executable' flag to that script with:

$ chmod a+x pt_keyboard.py

Otherwise rosrun will not run the script.

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answered 2013-09-19 02:44:59 -0600

mike.sru
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Thanks a lot! That's it ;).

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Great :) But please use Answer form only if you have an answer for your own question. For everything else please use comments.

Boris ( 2013-09-19 02:48:36 -0600 )edit

ok, sorry, I'll pay attention next time.

mike.sru ( 2013-09-20 03:56:38 -0600 )edit

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