save project

my_tree.py

@@ -7,9 +7,23 @@ w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
 # 移动到起点
-pen.left(90)
+pen.right(-90)
 pen.up()
-pen.backward(150)    # 后退
+pen.forward(-150)    # 后退
 pen.down()
+pen.backward(-100)
+pen.right(30)
+pen.backward(-50)
+pen.up()
+pen.forward(-50)
+pen.right(-60)
+pen.down()
+pen.backward(-50)
+pen.up()
+pen.forward(-50)
+pen.left(-30)
+pen.forward(-100)
+
+
 
 turtle.done()