小编Mah*_*man的帖子

我试图将我用汇编语言编写的引导加载程序转换为ISO映像文件.以下是MikeOS bootloader 的代码.这是我的引导程序代码:

   BITS 16
start:
    mov ax, 07C0h     ; Set up 4K stack space after this bootloader
    add ax, 288       ; (4096 + 512) / 16 bytes per paragraph
    mov ss, ax
    mov sp, 4096

    mov ax, 07C0h     ; Set data segment to where we're loaded
    mov ds, ax

    mov si, text_string   ; Put string position into SI
    call print_string ; Call our string-printing routine

    jmp $         ; Jump here - infinite loop!
    text_string db 'This …

我使用 Gnome Archive Manager (Ubuntu OS) 创建了一个 zip 文件。我使用密码创建了 zip 文件，并尝试使用zipfilePython 库解压缩它：

import zipfile

file_name = '/home/mahmoud/Desktop/tester.zip'
pswd = 'pass'

with zipfile.ZipFile(file_name, 'r') as zf:
    zf.printdir()
    zf.extractall(path='/home/mahmoud/Desktop/testfolder', pwd = bytes(pswd, 'utf-8'))

当我运行此代码时，出现以下错误，并且我非常确定密码正确。错误是：

File "/home/mahmoud/anaconda3/lib/python3.7/zipfile.py", line 1538, in open
  raise RuntimeError("Bad password for file %r" % name)

RuntimeError: Bad password for file <ZipInfo filename='NegSkew.pdf' compress_type=99 filemode='-rw-rw-r--' external_attr=0x8020 file_size=233252 compress_size=199427>

如何解压缩文件？

我正在写一个简单的程序.该程序有2个QStrings设置有以下变量:文件的路径和名称,有一个第三个QString,我稍后用它来将前2个QString的追加结果放在一起.我想做的是附加2 QStrings并将它们放在appendAll QString中,然后将appendAll QString发送到QFile变量构造函数.现在,当我这样做时,它打印"无法创建文件",这是我使用的代码:

#include <QString>
#include <QTextStream>
#include <QFile>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);


    QTextStream output(stdout);

    QString location = "/home/mahmoud/Destkop";
    QString name = "mahmoud.txt";
    QString appendAll;

    if( !location.endsWith("/") )
    {
        location.append("/");
    }

    appendAll = location.append(name);

    output << appendAll << endl;

    QFile myFile(appendAll);

    if(myFile.open(QIODevice::WriteOnly | QIODevice::Text ))
    {
        output << "File Has Been Created" << endl;
    }
    else
    {
        output << "Failed to Create File" << endl;
    }

    QTextStream writeToFile(&myFile);

    writeToFile << "Hello World" << endl; …