turtle

import turtle as t  #小名
#from turtle import *color("lime")
#t = turtle
x = 0
for _ in range(30):
    #print(_)
    t.backward(50 + x) #
    t.left(60)
    x += 10
    t.color("green")
# guess who to be random choice?
# kevin 猜对是自己永远猜字