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I am incorporating a package (py_trees for behavior trees) in my ROS program. Unfortunately, py_trees does not support python2. I am using ROS melodic on Ubuntu 18.04 from what I can tell, ROS python source file often require python2.
My question is: How do I set ROS up to allow me to call a Pythion 3 only package?
Thanks!
Officially, Melodic does not support Python 3. So the official answer would be: you can't.
There are ways to build just enough of Melodic with Python 3 to do this though, and an alternative could be using something like catkin_virtualenv, which does support Python 3.
However, I'm confused: py_trees_ros supports ROS Melodic (it has even been released there). Could you not use that?
I built my code outside of ROS with py_trees. Never looked closely at py_trees_ros but it looks like its a slightly different API. Anyway your answer is what I requirer - melodic doesn't support py3 directly. I will look at py_trees_ros, and I assume that will solve my problem. If you promote your comment to an answer I will check it off.
What about this: https://medium.com/@beta_b0t/how-to-s... instructions for writing nodes in py3 on melodic?
Asked: 2020-11-25 19:53:59 -0500
Seen: 75 times
Last updated: Nov 25 '20
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This doesn't seem to be a "ROS" question as much as a python2 and python3 compatibility question. You might find better resources under that premise.
@stevemacenski - I didn't explain it well the first time; can you take a look again?