save project

my_tree.py

 import turtle
+import random
+a=random.randint(1,2)
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.speed(100000000)
 # 画布大小
 w = turtle.Screen()
-w.bgcolor('beige')
+if a==1:
+    w.bgcolor('beige')# beige米白
+else:
+    w.bgcolor('wheat')# wheat小麦
 pen.hideturtle()
 pen.left(90)
 pen.up()