Switch last_changed not recorded/always resets at startup

[VDRainer]

I made a little python script a while ago.

Real state last_changed

In the moment restarting HA is a common thing for me. On every restart the last_changed timestamp gets updated. Inspired by this topic Last changed/Last updated i made a script to get the real last_changed timestamp. I need this for: monitoring my old heating control with a sensor and if a temperature not changes in a few minutes, it crashed and i need a notification. monitoring how long the playstation is on and send my son a message when his time is over. … When i’m fiddli…