程序执行流程：猜数字游戏；库的使用：turtle

myNum = 4
print('猜数字游戏\n')
while True:
     guess = int(input('请猜一个数：'))
     if guess > myNum:
         print('猜大了')
     elif guess < myNum:
         print('猜小了')
     else:
         print('恭喜你，猜对了！')
         break

import turtle
turtle.circle(50)
turtle.circle(100)
turtle.circle(150)
turtle.circle(200)
turtle.done()

import turtle
turtle.circle(50)
turtle.up()
turtle.goto(0,-50)
turtle.down()
turtle.circle(100)
turtle.done()

import turtle

turtle.circle(50,100)
turtle.circle(50,100,steps=3)

turtle.up()
turtle.goto(0,50)
turtle.down()

turtle.circle(10)

turtle.up()
turtle.goto(10,80)
turtle.down()

turtle.circle(10)

turtle.hideturtle()

turtle.down()