save project

my_tree.py

@@ -18,14 +18,14 @@ a.down()
 # ikun
 def tree(x):
     if x>=50:
-        a.forward(n)
+        a.forward(x)
         a.right(30)
-        tree(n-10)
+        tree(x-10)
         a.left(60)
-        tree(n-10)
+        tree(x-10)
         a.right(30)
         a.penup()
-        a.forward(n)
+        a.forward(x)
         a.pendown()
 tree(300)