auto save

1.py

 import turtle
-pen=turtle.Pen()
-pen.write("天王盖地虎\n你个250",font=("times",40,"normal"))
-pen.hideturtle()
-turtle.done()
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+for i in range(4):
+    turtle.forward(200)
+    turtle.left(90)
+turtle.penup()
+turtle.goto(-40,-10)
+turtle.pendown()

m.py

+a=6#长方形的长
+b=3#长方形的宽
+s=a*b#长方形的面积=长*宽
+print('长方形的面积为：',s)
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n.py

+r=float(input('圆的半径：'))
+d=r*2
+C=3.14*d
+s=3.14*r*r
+print('圆的直径是：%.2f'%d)
+print('圆的周长是：%.3f'%C)
+print('圆的面积是：%.1f'%s)
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