save project

diy1.py

 import turtle
+import random
 pen=turtle.Pen()
 pen.penup()
 pen.goto(100,-100)
 pen.write("你好呀,",font=("Times",15,"normal"))
 screen=turtle.Screen()
-screen.bgcolor("lightgreen")
-len=100
+screen.bgcolor("green")
+len=random.randint(20,100)
 pen1=turtle.Pen()
 pen1.pensize(6)
 pen1.color("red")
 pen1.left(45)
-pen1.fd(len*2)
-pen1.circle(len,180)
+pen1.fd(len)
+pen1.circle(len/2,180)
 pen1.rt(90)
-pen1.circle(len,180)
-pen1.fd(len*2)
+pen1.circle(len/2,180)
+pen1.fd(len)
 pen1.hideturtle()
 turtle.done()