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diy1.py

 # 我们都爱夸夸
 import turtle
-# pen=turtle.Pen()
-# pen.write("Hi，小贝、悟空，想不到是我吧~\n这是我用python写的第一张电子贺卡\npython可好玩了",font=("Times","30","normal"))
-# turtle.done()
+screen=turtle.Screen()
+screen.bgcolor("light blue")
+pen=turtle.Pen()
+pen.write("Hi，小贝、悟空，想不到是我吧~\n这是我用python写的第一张电子贺卡\npython可好玩了",font=("Times","13","normal"))
 pen1=turtle.Pen()
+pen1.pensize(5)
+pen1.pencolor("red")
+pen1.penup()
+pen1.goto(-100,0)
+pen1.pendown()
+len=int(screen.textinput("大小","爱心大小"))
 pen1.left(45)
-pen1.forward(100)
-pen1.circle(50,180)
+pen1.forward(2*len)
+pen1.circle(len,180)
 pen1.right(90)
-pen1.circle(50,180)
-pen1.forward(100)
+pen1.circle(len,180)
+pen1.forward(2*len)
 turtle.done()
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