LV3-2.py

import turtle
screen=turtle.Screen()
screen.bgcolor("light blue")
pen=turtle.Pen()
pen.penup()
pen.goto(100,-100)
pen.write("Hi,诺依~\n 用 pyhton写电子贺卡真的是太有趣啦~\n 我也喜欢python~\n",font=("Times",30,"normal"))
pen.hideturtle()

pen1=turtle.Pen()
pen1.pencolor("red")
pen1.pensize(5)
len=screen.textinput("提示","你想要多大的爱心呀？")
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()