auto save

my_tree.py

 import turtle
-
+def t(n):
+    if n>=50:
+        pen.pd()
+        pen.fd(n)
+        pen.right(30)
+        t(n-10)
+        pen.left(60)
+        t(n-10)
+        pen.right(30)
+        pen.pu()
+        pen.backward(n)
 pen = turtle.Turtle()
+pen.speed(0)
 pen.color('sienna')
 # 画布大小
 w = turtle.Screen()
@@ -10,18 +21,5 @@ w.bgcolor('wheat')      # wheat小麦
 pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
-pen.down()
-pen.fd(100)
-pen.right(30)
-pen.fd(50)
-pen.pu()
-pen.backward(50)
-pen.left(60)
-pen.pd()
-pen.fd(50)
-pen.pu()
-pen.backward(50)
-pen.right(30)
-pen.backward(100)
-pen.pd()
+print(t(100))
 turtle.done()