save project

my_tree.py

@@ -11,16 +11,16 @@ pen.left(90)
 pen.up()
 pen.up()
 pen.backward(150)    # 后退
 pen.backward(150)    # 后退
 pen.down()
 pen.down()
+
 pen.forward(100)
 pen.forward(100)
 pen.left(30)
 pen.left(30)
 pen.forward(50)
 pen.forward(50)
-pen.left(180)
-pen.forward(50)
-pen.left(120)
-pen.forward(50)
-pen.left(180)
+
+pen.backward(50)
+pen.right(60)
 pen.forward(50)
 pen.forward(50)
-pen.right(150)
+pen.backward(50)
+pen.left(30)
 pen.backward(100)
 pen.backward(100)
 
 
 turtle.done()
 turtle.done()