save project

my_tree.py

 import turtle
 import random
-import 
+import time
+import pygame
 l = ["snow","lightcoral"]
 def tree(n):
     if n >=0:
@@ -28,7 +29,7 @@ pen.color('sienna')
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 # 移动到起点
-
+pen.speed(1000000000000000000000000000000)
 pen.left(90)
 pen.up()
 pen.backward(150)    # 后退