auto save

diy 1.py

+import turtle
+#背景颜色
+screen=turtle.Screen()
+screen.bgcolor("light blue")
+#写字
+pen=turtle.Pen()
+pen.penup()
+pen.goto(100,100)
+pen.write("hi",font=("Times",20,"normal"))
+pen.hideturtle()
+#定义变量
+len=50
+pen1=turtle.Pen()
+pen1.left(45)
+pen1.forward(2*len)
+pen1.circle(len,180)
+pen1.right(90)
+pen1.circle(len,180)
+pen1.forward(2*len)
+pen1.hideturtle()
+turtle.done()
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