save project

diy1.py

 # 利用write()帮助悟空给诺依回信吧~
 import turtle
 pen=turtle.Pen()
+from random import randint
+screen=turtle.Screen()
+screen.bgcolor("blue")
 pen.penup()
 pen.goto(50,-200)
 pen.pendown()
@@ -9,12 +12,13 @@ pen.penup()
 pen.goto(-50,0)
 pen.pendown()
 pen.pensize(5)
+len=randint(50,150)
 pen.pencolor("red")
 pen.left(45)
-pen.forward(100)
-pen.circle(50,180)
+pen.forward(len*2)
+pen.circle(len,180)
 pen.right(90)
-pen.circle(50,180)
-pen.forward(100)
+pen.circle(len,180)
+pen.forward(len*2)
 pen.hideturtle()
 turtle.done()
\ No newline at end of file