from turtle import * col = ["#1AFFD5", "#FF4242", "#FFBC42", "#06AED5", "#9D69A3"] col_1 = ["#151515"] nb_col_1 = len(col_1) nb_col = len(col) speed(0) size = 1 angle = 220 repeter = 1000 longueur = 1 for i in range(repeter-995) : color(col_1[i%nb_col_1]) pensize(size+100) left(angle) forward(1) size = size +10 size = 6 for longueur in range(repeter) : for size in range(repeter-998) : color(col[longueur%nb_col]) pensize(size) forward(longueur) left(angle)