#WalkDir函数枚举目录中所有目录和文件，参数（枚举目录输出列表，枚举文件输出列表，要枚举的目录）def WalkDir(dirlist,filelist,dirname):    try:        ls=os.listdir(dirname)    except:        print "Access Deny."    else:        for fn in ls:            temp=os.path.join(dirname,fn)            if (os.path.isdir(temp)):                dirlist.append(temp)                WalkDir(dirlist,filelist,temp)            else:                filelist.append(temp)    return dirlist,filelist