auto save

my_tree.py

-
-    pen.backward(n)
-    pen.down()
-    
-pen = turtle.Turtle()
-pen.color('sienna')
-# 画布大小
-w = turtle.Screen()
-w.bgcolor('wheat')      # wheat小麦
 import turtle
 
+  
 def tree(n)
 if n >50:
     pen.forward(n)
-    pen.right(30)
+    angle = random.randint(0,3)
+    length = randow.randit(1,15)
+    pen.right(angle)
     tree(n-50)
     pen.left(30)
     pen.left(30)
@@ -26,3 +20,19 @@ pen.backward(150)    # 后退
 pen.down()
 
 turtle.done()
+pen = turtle.Turtle()
+pen.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+pen = turtle.Turtle()
+pen.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+pen = turtle.Turtle()
+pen.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+import turtle