TypeError: string pattern on a bytes-like object

[kindofausername]

Wanted to use

$ rosrun tf view_frames

Listening to /tf for 5.0 seconds
Done Listening
b'dot - graphviz version 2.40.1 (20161225.0304)\n'
Traceback (most recent call last):
File "/opt/ros/melodic/lib/tf/view_frames", line 119, in
generate(dot_graph)
File "/opt/ros/melodic/lib/tf/view_frames", line 89, in generate
m = r.search(vstr)
TypeError: cannot use a string pattern on a bytes-like object

Simply adding the .decode('utf-8') to m = r.search(vstr.decode('utf-8')) fixed it.

[andersdu]

saved my day!

[ymollard]

You may prefer tf2 since tf is now deprecated: rosrun tf2_tools view_frames.py which requires sudo apt install ros-noetic-tf2-tools first.

But anyway, tf is still there, could anyone merge this, please? Maybe @tfoote?
Maybe rebased into noetic-devel though, since only Noetic is running with py3 by default.

[acarrillo]

You may prefer tf2 since tf is now deprecated: roslaunch tf2_tools view_frames.py which requires sudo apt install ros-noetic-tf2-tools first.

Very minor: that suggestion should be rosrun instead of roslaunch, like rosrun tf2_tools view_frames.py.

And +1 for targeting noetic, much agreed!

[MichaelGrupp]

I opened a similar PR - this whole code block is useless nowadays, so the problem can be also resolved by removing the check: #222

[lucbettaieb]

@tfoote +1 <3

[lucbettaieb]

+1 @mikeferguson maybe?

[tfoote]

Replaced by #222

[Esmaeel-Hilal]

Thank you, you saved me

[Nassef10]

how can i edit this file ? it refuses to be edited, it is secured !