auto save

my_tree.py

 import turtle
 
 pen = turtle.Turtle()
+pen.shape("turtle")
 pen.color('sienna')
+pen.size(2)
 # 画布大小
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
@@ -12,4 +14,20 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
+
+pen.forward(100)
+pen.left(30)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.right(60)
+pen.down()
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.left(30)
+pen.backward(100)
+pen.down()
+pen.hideturtle()
+
 turtle.done()