import turtle
screen=turtle.Screen()
screen.bgcolor("pink")
pen=turtle.Pen()
pen.penup()
pen.goto(100,-300)
pen.write("python真有趣！\n我也很喜欢！\n谢谢啦~\n",font=("Times",25,"normal"))
pen.hideturtle()
pen1=turtle.Pen()
pen1.pencolor("red")
pen1.pensize(5)
len=screen.textinput("提示：","请输入爱心的大小？")
lovesize=int(len)
pen1.left(45)
pen1.forward(2*lovesize)
pen1.circle(lovesize,180)
pen1.right(90)
pen1.circle(lovesize,180)
pen1.forward(2*lovesize)
pen1.hideturtle()
turtle.done()