dashing v0.7.9 rclpy incompatible with python 3.5

[ghost]

Bug report

Required Info:

• Operating System:
  • Debian 9
• Installation type:
  • from source
• Version or commit hash:
  • dashing (rclpy 0.7.9)
• DDS implementation:
  • Fast-RTPS
• Client library (if applicable):
  • rclpy

Steps to reproduce issue

1. Follow the instruction (https://index.ros.org/doc/ros2/Installation/Dashing/Linux-Development-Setup/) to setup ros2_dashing on Debian 9
2. run ros2 topic list

Expected behavior

expected output:

/parameter_events
/rosout

Actual behavior

actual output:

Failed to load entry point 'send_goal': invalid syntax (client.py, line 299)
Failed to load entry point 'list': invalid syntax (client.py, line 299)
Failed to load entry point 'info': invalid syntax (client.py, line 299)
Failed to load entry point 'show': invalid syntax (client.py, line 299)
/parameter_events
/rosout

Additional information

Actually, it's because the commit #474 #475, which use python 3.6 way to format string, and it's incompatible with python 3.5.

[nuclearsandwich]

@jacobperron can you please update #475 so it is python3.5 compatible?

[jacobperron]

Yep, on it. I'll have to keep that in mind next time I backport to Dashing.

[jacobperron]

Should be resolved by #483

[nuclearsandwich]

0.7.10 is now released and is heading to the buildfarm. Thanks for reporting this!