I'm getting with Python and RPI and there is this script in the examples for the Sense HAT emulator were I don't know what are a pair of lines of code for me they look like an array but I think they might be other kind of data, so this is the code:
from sense_emu import SenseHat
sense = SenseHat()
green = (0, 255, 0)
white = (255, 255, 255)
while True:
    humidity = sense.humidity
    humidity_value = 64 * humidity / 100
    pixels = [green if i < humidity_value else white for i in range(64)]
    sense.set_pixels(pixels)
What kind of data are this two ?
green = (0, 255, 0)
white = (255, 255, 255)
 
     
     
    