auto save

my_tree.py

+import turtle
+
+pen = turtle.Turtle()
+pen.color('sienna')
+turtle.left(90)
+turtle.forward(50)
+turtle.right(30)
+turtle.forward(30)
+turtle.penup()
+turtle.backward(30)
+turtle.left(60)
+turtle.pendown()
+turtle.forward(30)
+
+
+
+
+
+
+
+
+
+pen.left(90)
+pen.up()
+pen.backward(150)    # 后退
+pen.down()
+
+turtle.done()