auto save

er.py

+import turtle
+turtle.penup()
+turtle.goto(0,-100)
+turtle.pendown()
+turtle.pencolor("red")
+turtle.pensize(2)
+turtle.circle(100)
+turtle.goto(0,100)
+turtle.penup()
+turtle.goto(-100,0)
+turtle.pendown()
+turtle.goto(100,0)
+turtle.hideturtle()
+turtle.done()
\ No newline at end of file

err.py

+a=input("请输入奶牛的头数:")
+b=int(a)*20*7
+print("奶牛的头数赋值为:",a)
+print(a,"头奶牛7天可以产",b,"千克的牛奶")
\ No newline at end of file

errr.py

+a=[3,6,9]
+c=input("请输入b列表为")
+b=[c]
+
+

errrr.py

+a=input("请输入一串数字")
+b=[a]
+len(b)
+print(b)