这是一个Python示例代码，实现了不断打印方向，直到按下另一个键停止打印。

import keyboard

def print_direction(direction):
    print("Current direction:", direction)

print("Press any key to start printing directions...")
keyboard.wait('any')  # 等待按下任意键开始

direction = "north"
print_direction(direction)

while True:
    if keyboard.is_pressed('q'):  # 检测按键q是否被按下
        break
    elif keyboard.is_pressed('up'):
        direction = "north"
        print_direction(direction)
    elif keyboard.is_pressed('down'):
        direction = "south"
        print_direction(direction)
    elif keyboard.is_pressed('left'):
        direction = "west"
        print_direction(direction)
    elif keyboard.is_pressed('right'):
        direction = "east"
        print_direction(direction)

print("Stopped printing directions.")

运行代码后，按下任意键开始打印方向，按下键盘上的方向键可以改变打印的方向。按下键盘上的q键可以停止打印。