import turtle
screen=turtle.Screen()
screen.bgcolor("light blue")
pen=turtle.Pen()
pen.penup()
pen.goto(100,-100)
pen.write("qweertyuinfgh\nfghjghjgtyuio\ndfgtyuiouy\n",font=("Times",20,"normal"))
pen.hideturtle()
pen1=turtle.Pen()
pen1.pensize(5)
pen1.pencolor("blue")

b=screen.textinput("提示","你想要多大的爱心：")
s=int(b)
pen1.left(45)
pen1.forward(2*s)
pen1.circle(s,180)
pen1.right(90)
pen1.circle(s,180)
pen1.forward(2*s)
turtle.done()