程序执行流程：猜数字游戏；库的使用：turtle

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

Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 17:00:18) [MSC v.1900 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> import turtle
>>> turtle.circle(50)
>>> turtle.up()
>>> turtle.goto(0,-200)
>>> turtle.down()
>>> turtle.circle(200)
>>> turtle.write(100)

Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 17:00:18) [MSC v.1900 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> import turtle
>>> turtle.circle(50)
>>> turtle.circle(100)
>>> turtle.goto(0,-100)
>>> turtle.circle(200)
>>> turtle.up()
>>> turtle.goto(0,-200)
>>> turtle.circle(200)
>>> turtle.clear()
>>> turtle.reset()
>>> turtle.circle(100,180)
>>> turtle.circle(100,180,steps=3)
>>> turtle.up()
>>> turtle.goto(0,60)
>>> turtle.circle(20)
>>> turtle.down()
>>> turtle.circle(20)
>>> turtle.up()
>>> turtle.goto(15,80)
>>> turtle.goto(20,90)
>>> turtle.goto(20,120)
>>> turtle.goto(20,110)
>>> turtle.circle(15)
>>> turtle.down()
>>> turtle.circle(15)
>>> turtle.hideturtle()

myNum=7
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