如何在Pynput上设置按下和释放功能之间的计时器

Question

我想制作一个计时器，当没有按键时启动，当按下任何按键时，计时器都会重置。我真的不知道如何实现这一点，但我认为使用线程和时间库是可能的。

样本代码：

import threading, time
from pynput import keyboard
keys = []
def write_keys(keys):
for key in keys:
k = str(key).replace("'", "")
# do some stuff here
def on_press(key):
# the timer will reset if a key is pressed
global keys
keys.append(key)
write_keys(keys)
keys = []
def on_release(key):
print(f'{key} was released')
# the timer will start when no key is pressed
# Collecting events
with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
listener.join()

Answer 1

使用线程和ctypes库的另一个可能答案。如果你想继续在功能上做事，我建议你这样做。

import threading
from pynput import keyboard
from ctypes import Structure, windll, c_uint, sizeof, byref
from time import sleep
class LASTINPUTINFO(Structure):
_fields_ = [
('cbSize', c_uint),
('dwTime', c_uint),
]
def get_idle_duration():
while True:
lastInputInfo = LASTINPUTINFO()
lastInputInfo.cbSize = sizeof(lastInputInfo)
windll.user32.GetLastInputInfo(byref(lastInputInfo))
millis = windll.kernel32.GetTickCount() - lastInputInfo.dwTime
millis = millis / 1000.0
print(millis)
sleep(1) 
#return  millis
keys = []
def write_keys(keys):
for key in keys:
k = str(key).replace("'", "")
print(k)
def on_press(key):
global keys
keys.append(key)
write_keys(keys)
keys = []
listener = keyboard.Listener(on_press=on_press)
last_input_info = threading.Thread(target=get_idle_duration)
listener.start()
last_input_info.start()
listener.join()
last_input_info.join()

Answer 2

这似乎很容易，下面的代码将打印自上次按下任何键以来的秒数。

import time
from pynput import keyboard
counter_time = 0
def on_press(key):
# the timer will reset if a key is pressed
global counter_time
counter_time = 0
# Collecting events
listener = keyboard.Listener(on_press=on_press)
listener.start()
while True:
print(f"Now the time is:{counter_time} since the last time you pressed any keys")
time.sleep(0.5)
counter_time += 0.5