PyQt中的os.walk类似物 [英] os.walk analogue in PyQt

问题描述

在我可以继续对某些任务进行一些过滤的递归目录/文件搜索之前，我想知道Qt/PyQt是否具有os.walk的类似物.

Before I can continue to implement recursive dir/file search with some filtering for some tasks I want to know if Qt/PyQt has analogue of os.walk.

主应用程序是PyQt4中的GUI应用程序，QString s和路径对象(文件，目录)中的所有文本字段均使用QFile，QDir，QFileinfo进行操作.

Main app is a GUI app in PyQt4 and all text fields in a QStrings and path objects (files, directories) uses QFile, QDir, QFileinfo for manipulations.

作为模拟，我的意思是快速方便的递归fs树遍历工具.

As analogue I mean fast and convenient recursive fs-tree traversal tool.

我应该使用os.walk还是更快，更有用的东西?

Should I use os.walk or something much faster and more informative?

PS.也许这可以帮助我，但是我不确定这是否比os.walk更有效.

PS. Maybe this can help me but I'm not sure if this more efficient than os.walk.

推荐答案

我应该使用os.walk还是更快，更有用的工具?

Should I use os.walk or something much faster and more informative?

没有任何东西，如果可以的话，我建议在python中使用os.walk.一样好.

There is none, and I would recommend using os.walk in python if you can. It is just as good as it gets.

这不仅是因为Qt没有这种方便的方法，而且即使您基于QDir编写自己的机制，也可以像使用os.walk一样手工制作所有三个变量.

It is not only because Qt does not have such a convenience method, but even if you write your own mechanism based on QDir, you will have access to all the three variables without hand-crafting like with os.walk.

如果您迫切希望使用Qt，则可以在下面我曾经用过的下面提供以下遍历功能.

If you are desperate about using Qt, then you could have the following traverse function below I used myself a while ago.

#include <QDir>
#include <QFileInfoList>
#include <QDebug>

void traverse( const QString& dirname )
{
    QDir dir(dirname);
    dir.setFilter(QDir::Dirs | QDir::Files | QDir::NoSymLinks | QDir::NoDot | QDir::NoDotDot);

    foreach (QFileInfo fileInfo, dir.entryInfoList()) {
      if (fileInfo.isDir() && fileInfo.isReadable())
          traverse(fileInfo.absoluteFilePath());
      else
          qDebug() << fileInfo.absoluteFilePath();
    }
}

int main()
{
    traverse("/usr/lib");
    return 0;
}

或对于大型目录仅使用以下内容，通常来说，因为它可以更好地扩展并且更加方便:

or simply the following forfor large directories and in general since it scales better and more convenient:

#include <QDirIterator>
#include <QDebug>

int main()
{
    QDirIterator it("/etc", QDirIterator::Subdirectories);
    while (it.hasNext())
        qDebug() << it.next();
    return 0;
}

main.pro

TEMPLATE = app
TARGET = qdir-traverse
QT = core
SOURCES += main.cpp

构建并运行

qmake && make && ./qdir-traverse

然后，您将打印出所有遍历的文件.您可以开始对其进行自定义，然后进一步满足您的需求.

Then, you will get all the traversed files printed. You can start customizing it then further to your needs.

这篇关于PyQt中的os.walk类似物的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！