save project

my_tree.py

@@ -13,6 +13,9 @@ pen.backward(150)    # 后退
 pen.down()
 def s(n):
     if n>=0:
+        if n<=12
+            color_list=['snow','lightcoral']
+            
         pen.pensize(n/10)
         pen.forward(n)
         angle=random.random(0,30)