5.py

import turtle
turtle.bgcolor("pink")
lenth=turtle.textinput("你想要多长的蟒蛇？","范围在3-10之间")
lenth=int(lenth)
turtle.penup()
turtle.goto(-200,0)
turtle.pendown()
turtle.pensize(15)
turtle.setheading(-40)
for i in range(lenth):
    turtle.color("red")
    turtle.circle(30,80)
    turtle.bgcolor("turquoise")
    turtle.color("blue")
    turtle.circle(-30,80)
    turtle.bgcolor("violet")
turtle.color("blue")
turtle.circle(30,180)
turtle.color("cyan")
turtle.setheading(-180)
turtle.forward(30)
turtle.done()