Question

我想要一个按键记录器，该按键记录器可以通过按下一个键（任意键）来激活，然后将在设定的时间（例如10秒）内按下的所有键保存在列表中，然后打印出来。我尝试过：

from pynput import keyboard
from time import sleep

def on_press(key):
    global recording, keys_pressed
    if not recording:
        recording = True
        sleep(10)
        print(" ".join(keys_pressed))
        recording = False


listener = keyboard.Listener(
    on_press=on_press)
listener.start()


def on_release(key):
    global recording
    if recording:
        print("key pressed")
        global keys_pressed
        Key = str(key)
        if Key.startswith("Key."):
            keys_pressed.append(Key[4:].strip("'"))
        else:
            keys_pressed.append(str(key).strip("'"))

listener2 = keyboard.Listener(
    on_release=on_release)
listener2.start()

keys_pressed = []

recording = False

while True:
    pass

这有点用，但是它多次打印列表，这显然是我所不希望的。该程序的运行速度也非常慢。

如果您知道任何解决方案，请告诉我。

Answer 1

它会多次打印我显然不希望的列表

您明确要求它在每次按此按钮时打印列表

print(" ".join(keys_pressed))

此外，我不明白您为什么要尝试实现2个侦听器？

我会做更多类似的事情，尽管我敢肯定还有更好的解决方案！

from pynput import keyboard
from time import time

my_log = []
started = False
start_time = time() # just here to initialize, won't be used until started = True

def on_press(key):
    global started
    global start_time
    if started is False:
        started = True
        start_time = time()
        print("starting timer")
    try:
        character = '{0}'.format(key.char)
    except AttributeError:
        character = '{0}'.format(key)
    my_log.append(character)


def listen():
    global started
    print('keyboard listener is initialized')
    with keyboard.Listener(on_press=on_press):
        while True:
            if started:
                now = time()
                if now - start_time > 10:
                    break
        return # end our listener

listen()
print("done listening")
print(my_log)

示例输出如下（有点混乱，因为打印内容与键入的内容结合在一起）：

keyboard listener is initialized
astarting timer
bcdefghijklmnopqrstuvwxyzdone listening
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']

按下按键即可激活键盘记录器，并使其运行一段设定的时间

1 个答案: