ros2 lifecycle state transition topics

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I have created a rclpy node and an associated *launch.py file.

I use ros2 launch "package" "launch file" to launch the node, and I see it successfully start. Embedding prints in the code seem to indicate that the node is taking lifecycle state transitions. However, I cannot query the lifecycle state.

I modeled my launch file after the Stereolabs zed node launch file. Is there an all-python managed node example that uses controlled state transitions for reference?

Thanks