auto save

1.py

+import turtle
+#背景颜色
+screen=turtle.Screen()
+screen.bgcolor("light blue")
+#写字
+pen=turtle.Pen()
+pen.penup()
+pen.goto(100,-100)
+pen.write("Hi,诺伊~\n用Python写电子贺卡真是太有趣啦~\n",font=("Times",30,"normal"))
+pen.hideturtle()
+#画爱心
+pen=turtle.Pen()
+pen.pencolor("rad")
+pen.pensize(5)
+#
+len=30
+pen.left(45)
+pen.forward(2*len)
+pen.circle(len,180)
+pen.right(90)
+pen.circle(len,180)
+pen.forward(2*len)
+pen.hideturtle()
+turtle.done()
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