auto save

my_tree.py

 import turtle
 import turtle
-
+import random
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
 # 画布大小
 # 画布大小
@@ -14,11 +14,12 @@ pen.down()
 
 
 def tree(n):
 def tree(n):
     if n>=10:
     if n>=10:
+        j = random.randint(10,70)
         pen.forward(n)
         pen.forward(n)
         pen.right(30)
         pen.right(30)
-        tree(n*0.5)
+        tree(j)
         pen.left(60)
         pen.left(60)
-        tree(n*0.5)
+        tree(j)
         pen.right(30)
         pen.right(30)
         pen.up()
         pen.up()
         pen.backward(n)
         pen.backward(n)