diy1.py

import turtle
screen=turtle.Screen()
screen.bgcolor("yellow")
pen=turtle.Pen()
len=screen.textinput("提示","你想要多大爱心呀？")
pen.penup()
pen.goto(100,-100) 
pen.write("Hi,诺依~\n用python写电子贺卡真是太有趣啦~\n我也喜欢python~\n——悟空",font=("Times",18,"normal"))
pen.hideturtle()
pen1=turtle.Pen()
pen1.pensize(5)
pen1.pencolor("red")
pen1.left(45)
pen1.fd(2*len)
pen1.circle(len,180)
pen1.right(90)
pen1.circle(len,180)
pen1.fd(2*len)
turtle.done()