save project

3-1.py

+import turtle
+screen=turtle.Screen()
+len=screen.textinput("提示","你要多大的？")
+
+a=int(len)
+screen.bgcolor("light blue")
+pen=turtle.Pen()
+pen.penup()
+pen.hideturtle()
+pen.goto(50,-50)
+pen.write("诺依,\nturtle真好用\n我会在画布上写字啦!",font=("Times",13,"normal"))
+pen1=turtle.Pen()
+pen1.left(45)
+pen1.forward(2*a)
+pen1.circle(a,180)
+pen1.right(90)
+pen1.circle(a,180)
+pen1.forward(2*a)
+pen1.hideturtle()
+turtle.done()
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