I shutdown my Raspberry pi 3 and removed the 40 pin ribbon cable from the pi 3 gpio pins.
A short time later I connected the ribbon cable to the gpio pins on the pi 3, BUT inadvertently connected it the wrong way round so that pin 1 on the cable was on pin 40 of the pi3, and then powered the pi3 back up again.
As soon as I realised what I a done, as all the Sense Hat leds were lit up, and stayed that way, I shut down the pi 3.
Now , after connecting the ribbon cable the correct way round and powered up, all the leds were still lit up all the time now.
I tried to make a python file with : from sense_hat import Sensehat, but produced an error message saying it could not import from sensehat.
It doesn’t look good now!