@borg re: my last message about multiple assign ie assigning several values on one line
a, b, c, d = 1, 2, 3, 4 etc
this can be used to swap values eg
a, b = b, a
in this file I used that method to create the 'moving fairground lights' illusion (lights switched on/off in a pattern so they appear to move). I have 3 lights cloned around the object and the brightness pattern toggles
a, b, c = b, c, a
to give 'movement'
cafelights.c4d