Conditional script - how to write more succintly

All 4 devices off = True:
The first line looks nicer, but doesn't work (order of execution issue?). The second line works, but is ugly. I suspect there is a more compact way to write an expression to test the onState of 4 devices (AND condition)

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# if not (led1.onState and led2.onState and led3.onState and led4.onState):
if  (not led1.onState and not led2.onState and not led3.onState and not led4.onState):
   indigo.device.turnOff(1580115691) # desk lamp

[matt (support)]

The logical equivalent of the second line needs ORs, not ANDs, to be equivalent. You want this:

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if not (led1.onState or led2.onState or led3.onState or led4.onState):