程序执行流程/布尔类型与布尔：运算猜数字游戏；库的使用：turtle

number = 23

while True:
    guess = int(input('请输入一个数字：'))
    if guess > number:
        print('>')
    elif guess < number:
        print('<')
    else:
        print('=')
        break

　　

import turtle
>>> turtle.circle(120)
>>> turtle.up()
>>> turtle.goto(0,30)
>>> turtle.down()
>>> turtle.circle(90)
>>> turtle.up()
>>> turtle.goto(0,60)
>>> turtle.down()
>>> turtle.circle(60)
>>> turtle.up()
>>> turtle.goto(0,90)
>>> turtle.down()
>>> turtle.circle(30)

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