save project

diy1.py

 import turtle 
 bi = turtle.Pen()
+pinmu = turtle.Screen()
 bi.pensize(5)
 bi.pencolor("red")
-len = 60
+len = pinmu.textinput("提示","请输入大小")
+int_len = int(len)
 bi.lt(45)
-bi.fd(2*len)
-bi.circle(len,180)
+bi.fd(2*int_len)
+bi.circle(int_len,180)
 bi.rt(90)
-bi.circle(len,180)
-bi.fd(len*2)
+bi.circle(int_len,180)
+bi.fd(int_len*2)
 bi.penup()
 bi.goto(-100,-100)
 bi.write("SB",font=("Times",30,"normal"))