(to use changed python scripts without rebuilding)
colcon build --packages-select <package_name> --symlink-install
colcon test --packages-select <package_name> --pytest-args -k <test_function_name> --event-handlers console_direct+
(to use changed python scripts without rebuilding)
colcon build --packages-select <package_name> --symlink-install
colcon test --packages-select <package_name> --pytest-args -k <test_function_name> --event-handlers console_direct+