save project

my_tree.py

@@ -12,5 +12,15 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
-turtle.done()
-pen.left100)
\ No newline at end of file
+pen.forward(200)
+pen.right(30)
+pen.forward(100)
+pen.left(60)
+pen.forward(100)
+pen.backward(100)
+pen.right(30)
+pen.backward(200)
+turtle.done()   
+
+    
+    
\ No newline at end of file