Fix the type annotation in pub.py.

ros2 / ros2cli

ROS 2 command line interface tools

Apache License 2.0

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Fix the type annotation in pub.py. #814

Closed clalancette closed 1 year ago

clalancette commented 1 year ago

In particular, Python 3.11 on RHEL-9 doesn't seem to like the pipe syntax for an optional argument. But we have the Optional marking available from typing, so switch to that instead.

clalancette commented 1 year ago

CI:

Linux
Linux-aarch64
Windows