save project

diy1.py

 import turtle
 import turtle
-screen=turtle.Screen
+screen=turtle.Screen()
 screen.bgcolor("light blue")
 screen.bgcolor("light blue")
 # 写字
 # 写字
 pen=turtle.Pen()
 pen=turtle.Pen()
@@ -11,8 +11,9 @@ pen.hideturtle()
 pen1=turtle.Pen()
 pen1=turtle.Pen()
 pen1.pencolor("red")
 pen1.pencolor("red")
 pen1.pensize(5)
 pen1.pensize(5)
+len=50
 pen1.left(45)
 pen1.left(45)
-pen1.forward(2*180)
+pen1.forward(2*len)
 pen1.circle(len,180)
 pen1.circle(len,180)
 pen1.right(90)
 pen1.right(90)
 pen1.circle(len,180)
 pen1.circle(len,180)