save project

my_tree.py

@@ -7,11 +7,18 @@ w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 w.bgcolor('wheat')      # wheat小麦
 def tree(n):
 def tree(n):
     if n>=50:
     if n>=50:
-        
+        pen.pendown()
         pen.forward(n)
         pen.forward(n)
         pen.right(30)
         pen.right(30)
-        pen.forward(n)
-        pen.left(30)
+        tree(n-10)
+        pen.left(60)
+        tree(n-10)
+        pen.right(30)
         pen.backward(n)
         pen.backward(n)
-
+        pen.penup()
+pen.left(90)
+pen.up()
+pen.backward(150)
+pen.down()
+tree(100)
 turtle.done()
 turtle.done()