[ros-users] [Discourse.ros.org] [Next Generation ROS] ROS2 L…

The problem might just be due to the way you invoke the processes. Python will by default perform output buffering. You might want to try forcing unbuffered output by e.g. setting the environment variable [PYTHONUNBUFFERED](https://docs.python.org/3/using/cmdline.html#envvar-PYTHONUNBUFFERED).





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