@toantrungthach Here you go:
OUT = [IN[0][0]]
OUT.extend("OK" if IN[0][x] == IN[0][x-1] else IN[0][x] for x in range(1,len(IN[0])))
@toantrungthach Here you go:
OUT = [IN[0][0]]
OUT.extend("OK" if IN[0][x] == IN[0][x-1] else IN[0][x] for x in range(1,len(IN[0])))