auto save

my_tree.py

 import turtle
 import random
 
+
 pen = turtle.Turtle()
 pen.color('sienna')
 # 画布大小
@@ -14,7 +15,7 @@ pen.backward(150)    # 后退
 pen.down()
 
 def tree(n):
-    if n>=0:
+    if n>=8:
         if n < 12:
             list=["snow","lightcoral"]
             color=random.choice(list)
@@ -34,7 +35,7 @@ def tree(n):
         pen.up()
         pen.backward(n)
         pen.down()
-tree(80)
+tree(75)
 turtle.done()