CODEWITHSUNDEEP
pythonubunturos
lmiguelvargasf
lmiguelvargasf

Reputation: 69943

Error when running a python script

I am trying to run a script using an interface created with tkinter. I have a button that executes a script which code is:

subprocess.call("python3 " + PATH_TO_SCRIPTS + "main.py 1 &", shell=True)

However, when this button is pressed I am getting the following error.

Traceback (most recent call last):
    File "/home/m//PycharmProjects/ROSAutonomousFlight/catkin_ws/src/ardrone_numeric_method_controller/scripts/main.py", line 17, in <module>
      from controller import *
    File "/home/m/PycharmProjects/ROSAutonomousFlight/catkin_ws/src/ardrone_numeric_method_controller/scripts/controller.py", line 5, in <module>
      import rospy

It says that the module rospy does not exist, but when I run import rospy using python or python3 it is imported successfully. What can I do to solve this issue? I am using Ubuntu.

Upvotes: 0

Views: 794

Answers (1)

luator
luator

Reputation: 5027

The comments to your question are mostly about Python, but I guess it is more of a ROS issue.

You don't have to set-up your PYTHONPATH manually to find rospy but you have to source the setup.bash of your catkin workspace (otherwise none of the ROS tools is found).

Usually this is done by adding something like

source ~/catkin_ws/devel/setup.bash

to .bashrc. This works fine for everything that is run in a terminal.

I don't know how you start your script but as it provides a graphical interface you probably just run it by double-clicking it in the file browser? If you indeed do so, the script is not run in a terminal and therefore can't find the ROS modules. Run the script from a terminal (in which the setup.bash has been sourced) and it should work.

Upvotes: 2

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