fix shebang line for python3

[mikaelarguedas]

Similar to ros-visualization/rqt_graph#43

Without this change the script cannot be rosrun on Noetic/Focal and results in:
/usr/bin/env: ‘python’: No such file or directory

Python scripts need to be installed using catkin_install_python for the shebang line to be rewritten to point to python3. More details at https://wiki.ros.org/UsingPython3/SourceCodeChanges#Changing_shebangs

@Karsten1987 @sloretz FYI

[mikaelarguedas]

@Karsten1987 @sloretz friendly 🛎️ Is there anything that I can do to help getting this merged/released in noetic?

[Karsten1987]

the ROS1 branches are pretty much unmaintained and I guess the repo should be flagged as such. Maybe it's a good idea to transfer the ownership to the orphaned package maintainers?

I am pretty happy to review any changes needed for ROS2, but restrain myself from maintaining the ROS1 branches.

[mikaelarguedas]

the ROS1 branches are pretty much unmaintained and I guess the repo should be flagged as such. Maybe it's a good idea to transfer the ownership to the orphaned package maintainers?

It seems like a sensible thing to do

I am pretty happy to review any changes needed for ROS2, but restrain myself from maintaining the ROS1 branches.

That's understandable. I fully appreciate the effort of porting to Python3 and making an initial release in Noetic 🙇‍♂️ . However the fact that the initial release is broken to the point that not a single node of this package can be used undermines that porting effort.
That's why I'm kindly tagging the people who performed the initial Python3 port and release to do a one-time follow-up release permitting users to use the package. Happy to help make that happen if there's more I can do than provide Python3 support patches.

[g-gemignani]

We use this library at Magazino GmbH and we need to port it to python 3 in the near future given Noetic. I imagine us being able to take over the library and maintaining it if no one else is interested in doing so...

[mikaelarguedas]

Thanks @g-gemignani for taking over!
Just saw ros/rosdistro#26156, do you think this PR can make it into a release soon ?

[g-gemignani]

Thanks for the patch!

[g-gemignani]

Thanks @g-gemignani for taking over!
Just saw ros/rosdistro#26156, do you think this PR can make it into a release soon ?

I am happy to help out. The reason why this commit is not in ros/rosdistro#26156 is because first I wanted to get the process under control. These days I will go through the different PRs and see if I can make another release in the next few days :)

[mikaelarguedas]

that's awesome thanks!