save project

my_tree.py

@@ -12,17 +12,15 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
-def tree(n):
-    if n>= 50:
-    pen.forward(n)
-    pen.right(30)
-    tree(n-50)
-    pen.left(60)
-    tree(n-50)
-    pen.right(30)
-    pen.up()
-    pen.backward(n)
-    pen.down()
+pen.forward(100)
+pen.right(30)
+pen.forward(50)
+pen.backward(50)
+pen.left(60)
+pen.forward(50)
+pen.backward(50)
+pen.right(30)
+pen.backward(100)