Function within function with a State Trigger Not Being Fired

[jlkermit]

I am trying to get a function within a function that has a state trigger decorator to fire with no luck. I have created a test script with no other code in it or imports. I have done two tests. The first with the state trigger decorator function on its own and the second with the state trigger decorator function within a function. I'm using Pyscript version 1.6.1 in HAOS 14.2 on a RPi 5.

Here is the script and log results.

The following state trigger decorator function fires as expected (HA was restarted prior to testing this)
Script:

log.info(f"*Python Test Script* Setting motion detection trigger")
@state_trigger("input_boolean.test_motion == 'on'")
def motion_detected_trigger():
    task.unique("input_boolean.test_motion")
    log.info(f"*Python Test Script* Motion detected trigger fired")

Log entries:
2025-01-30 09:26:27.144 DEBUG (MainThread) [custom_components.pyscript.trigger] trigger file.test.motion_detected_trigger is active
2025-01-30 09:26:27.152 DEBUG (MainThread) [custom_components.pyscript.trigger] trigger file.test.motion_detected_trigger: watching vars {'input_boolean.test_motion'}
2025-01-30 09:26:27.152 DEBUG (MainThread) [custom_components.pyscript.trigger] trigger file.test.motion_detected_trigger waiting for state change or event
2025-01-30 09:32:26.458 DEBUG (MainThread) [custom_components.pyscript.eval] file.test.motion_detected_trigger: calling motion_detected_trigger(, {'trigger_type': 'state', 'var_name': 'input_boolean.test_motion', 'value': 'off', 'old_value': 'on', 'context': <homeassistant.core.Context object at 0x7f98dd9250>})
2025-01-30 09:32:26.459 DEBUG (MainThread) [custom_components.pyscript.eval] file.test.motion_detected_trigger: calling unique("input_boolean.test_motion", {})
2025-01-30 09:32:26.459 DEBUG (MainThread) [custom_components.pyscript.eval] file.test.motion_detected_trigger: calling info("Python Test Script Motion detected trigger fired", {})
2025-01-30 09:32:26.459 INFO (MainThread) [custom_components.pyscript.file.test.motion_detected_trigger] Python Test Script Motion detected trigger fired

The following state trigger decorator function within a function does not fire and the log DOES NOT have entries for the state trigger function being 'active' or 'watching vars'. (HA was restarted prior to testing this)

Script:

def settrigger():
   log.info(f"*Python Test Script* Setting motion detection trigger")

    @state_trigger("input_boolean.test_motion")
    def motion_detected_trigger():
        task.unique("input_boolean.test_motion")
        log.info(f"*Python Test Script* Motion detected trigger fired")
        
settrigger()

Log entries:
2025-01-30 09:44:18.022 DEBUG (MainThread) [custom_components.pyscript.eval] file.test: calling settrigger(, {})
2025-01-30 09:44:18.022 DEBUG (MainThread) [custom_components.pyscript.eval] file.test: calling info("Python Test Script Setting motion detection trigger", {})
2025-01-30 09:44:18.022 INFO (MainThread) [custom_components.pyscript.file.test] Python Test Script Setting motion detection trigger

[IgnusG]

Hey @jlkermit 👋

You have to preserve the reference to the inner function. Otherwise pyscript simply "garbage collects" it upon exit.

reference = None

def settrigger():
   log.info(f"*Python Test Script* Setting motion detection trigger")

    @state_trigger("input_boolean.test_motion")
    def motion_detected_trigger():
        task.unique("input_boolean.test_motion")
        log.info(f"*Python Test Script* Motion detected trigger fired")

    # save reference so pyscript can call it when state changes
    reference = motion_detected_trigger
        
settrigger()

This is documented in the Trigger Closures section of the docs.

[jlkermit]

Thank you