save project

my_tree.py

 import turtle
-import random
+def tree(n):
+    if n>=0:
+        pen.forward(n)
+        pen.right(30)
+        tree(n-10)
+        pen.left(60)
+        tree(n-10)
+        pen.right(30)
+        pen.up()
+        pen.backward(n)
+        pen.down()
 pen = turtle.Turtle()
 pen.color('sienna')
 # 画布大小
@@ -15,17 +25,6 @@ pen.down()
 
 
 
-turtle.forward(100)
-turtle.right(30)
-turtle.forward(50)
-turtle.up()
-turtle.backward(50)
-turtle.left(60)
-turtle.down()
-turtle.forward(50)
-turtle.up()
-turtle.backward(50)
-turtle.right(30)
-turtle.forward(100)
 
+tree(50)
 turtle.done()
\ No newline at end of file