ioerror errno 13 权限被拒绝：'C:\\pagefile.sys'

Question

下面是我的代码，我想要实现的是遍历操作系统，生成代码正常运行的每个文件的 MD5 哈希，但是，我收到标题中的错误“ioerror errno 13 permission denied: 'C: \pagefile.sys'" 当我尝试从 C:\ 运行文件时，有没有办法可以以管理员身份运行它？即使我以管理员身份运行 cmd 也不起作用，提前谢谢你。

import os, hashlib

current_dir = os.getcwd()
for root,dirs,files in os.walk(current_dir):
    for f in files:
        current_file = os.path.join(root,f)
        H = hashlib.md5()

        with open(current_file) as FIN:
            H.update(FIN.read())
            with open("gethashes.txt", "a") as myfile:
                myfile.write(current_file),myfile.write(",      "),myfile.write(H.hexdigest()),myfile.write("\n")

        print current_file, H.hexdigest()

Answer 1

如错误中所述 - 权限被拒绝 - 因为需要读取文件以获取其内容的 md5。总会有我们没有读权限的情况。

import os, hashlib

def md5_chk(current_file):
    try:
        md5 = ''
        err = ''
        H = hashlib.md5()
        with open(current_file) as FIN:
            H.update(FIN.read())
            md5 = H.hexdigest()
    except Exception, e:
        md5 = None
        err = str(e)
        print err
    return md5,err

if __name__ == '__main__':    
    current_dir = os.getcwd()
    for root,dirs,files in os.walk(current_dir):
        with open("G://gethashes.txt", "a") as myfile:
            for f in files:
                current_file = os.path.join(root,f)
                md5_val,err = md5_chk(current_file)
                if md5_val is not None:
                     myfile.write(current_file),myfile.write(",    "),myfile.write(md5_val),myfile.write("\n")
                     print current_file, md5_val
                else:
                     myfile.write(current_file),myfile.write(",    "),myfile.write("Error - " + str(err)),myfile.write("\n")
                     print current_file, str(err)

如果有用请告诉我。