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每当插入闪存驱动器时，我都能够检测到。但是，（听起来很傻）无法检测是否插入了多个 USB。此外，我在编写代码以从中读取数据时遇到困难（它们）。有人可以帮忙吗？谢谢，提前:) PS我的系统是Windows 8 64位整件事是关于检测我将从传感器中挑选的信号。

这是检测USB的代码

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."
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