save project

my_tree.py

@@ -12,18 +12,18 @@ pen.up()
 pen.backward(150)    # 后退
 pen.backward(150)    # 后退
 pen.down()
 pen.down()
 def tree(n):
 def tree(n):
-    if n>=50:
+    if n>=40:
         pen.forward(n)
         pen.forward(n)
         pen.right(30)
         pen.right(30)
-        tree(n-30)
+        tree(n-20)
         pen.left(60)
         pen.left(60)
-        tree(n-30)
+        tree(n-20)
         pen.right(30)
         pen.right(30)
         pen.up()
         pen.up()
         pen.backward(n)
         pen.backward(n)
         pen.down()
         pen.down()
 
 
-tree(180)
+tree(150)
 
 
 
 
 turtle.done()
 turtle.done()