save project

my_tree.py

@@ -11,18 +11,18 @@ pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
 pen.down()
-def tree(n):
-    if n>=50:
-        pen.forward(n)
-        pen.left(30)
-        tree(n-10)
-        pen.right(60)
-        tree(n-10)
-        pen.left(30)
-        pen.up()
-        pen.backward(n)
-        pen.down()
+pen.forward(100)
+pen.left(30)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.down()
+
+pen.right(60)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.down()
+pen.left(30)
 
-tree(100)
-pen.hideturtle()
 turtle.done()