auto save

1.py

+ import turtle
+ pen= turtle.Pen()
+ screen=turtle.Screen()
+ size=screen.textinput("提示","你想要多大的魔法阵呀？")
+ len=int(size) #可以转换为整数
+ #len=float(size) #也可以转换为浮点数
+ pen.circle(len)
+ pen.circle(len,360,3)
+ pen.circle(len,60)
+ pen.circle(len,360,3)
+ turtle.done()
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