如何使用 Python 在 Windows 中检测闪存驱动器插件?

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时间:2020-09-15 13:39:09  来源:igfitidea点击:

How to detect flash drive plug-in in Windows using Python?

pythonwindowsusb-drive

提问by Mahela Munasinghe

I want to make my Windows computer run a Python script when it detects that a flash drive which has a particular name (for example "My drive") has been plugged in.

我想让我的 Windows 计算机在检测到插入了具有特定名称(例如“我的驱动器”)的闪存驱动器时运行 Python 脚本。

How can I achieve this?

我怎样才能做到这一点?

Should I use some tool in Windows or is there a way to write another Python script to detect the presence of a flash drive as soon as it is plugged in? (I'd prefer it if the script was on the computer.)

我应该在 Windows 中使用一些工具还是有办法编写另一个 Python 脚本来在插入闪存驱动器后立即检测它的存在?(如果脚本在计算机上,我更喜欢它。)

(I'm a programming newbie.. )

(我是编程新手..)

回答by mellow-yellow

Building on the "CD" approach, what if your script enumerated the list of drives, waited a few seconds for Windows to assign the drive letter, then re-enumerated the list? A python set could tell you what changed, no? The following worked for me:

建立在“CD”方法的基础上,如果您的脚本枚举驱动器列表,等待几秒钟让 Windows 分配驱动器号,然后重新枚举列表怎么办?一个 python 集可以告诉你发生了什么变化,不是吗?以下对我有用:

# building on above and http://stackoverflow.com/questions/827371/is-there-a-way-to-list-all-the-available-drive-letters-in-python
import string
from ctypes import windll
import time
import os

def get_drives():
    drives = []
    bitmask = windll.kernel32.GetLogicalDrives()
    for letter in string.uppercase:
        if bitmask & 1:
            drives.append(letter)
        bitmask >>= 1
    return drives


if __name__ == '__main__':
    before = set(get_drives())
    pause = raw_input("Please insert the USB device, then press ENTER")
    print ('Please wait...')
    time.sleep(5)
    after = set(get_drives())
    drives = after - before
    delta = len(drives)

    if (delta):
        for drive in drives:
            if os.system("cd " + drive + ":") == 0:
                newly_mounted = drive
                print "There were %d drives added: %s. Newly mounted drive letter is %s" % (delta, drives, newly_mounted)
    else:
        print "Sorry, I couldn't find any newly mounted drives."

回答by UltraInstinct

Though you can use a similar method as 'inpectorG4dget' suggested but that will be a lot inefficient.

尽管您可以使用与建议的“inpectorG4dget”类似的方法,但这会非常低效。

You need to use Win API for this. This page might be of use to you: Link

为此,您需要使用 Win API。此页面可能对您有用:链接

And to use Win API's in python check this link out: Link

要在 python 中使用 Win API,请查看此链接:链接

回答by inspectorG4dget

Well, if you're on a Linux distribution, then this questionon SO would have the answer.

好吧,如果您使用的是 Linux 发行版,那么SO 上的这个问题就会有答案。

I can think of a round-about (not elegant) solution for your problem, but at the very least it would WORK.

我可以为您的问题想到一个迂回(不优雅)的解决方案,但至少它会起作用。

Every time you insert your flash drive into a USB port, the Windows OS assigns a drive letter to it. For the purposes of this discussion, let's call that letter 'F'.

每次将闪存驱动器插入 USB 端口时,Windows 操作系统都会为其分配一个驱动器号。出于本次讨论的目的,我们将该字母称为“F”。

This code looks to see if we can cd into f:\. If it is possible to cd into f:\, then we can conclude that 'F' has been allocated as a drive letter, and under the assumption that your flash drive always gets assigned to 'F', we can conclude that your flash drive has been plugged in.

此代码查看我们是否可以 cd 进入f:\. 如果可以 cd into f:\,那么我们可以得出结论“F”已被分配为驱动器号,并且假设您的闪存驱动器始终分配给“F”,我们可以得出结论,您的闪存驱动器已被插入在。

import os
def isPluggedIn(driveLetter):
    if os.system("cd " +driveLetter +":") == 0: return True
    else: return False