Os.walk Analogue In Pyqt

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. Main app is a GUI app in PyQt4 an

Solution 1:

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

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

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.

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

main.cpp

#include<QDir>#include<QFileInfoList>#include<QDebug>voidtraverse( 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());
      elseqDebug() << fileInfo.absoluteFilePath();
    }
}

intmain(){
    traverse("/usr/lib");
    return0;
}

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

#include<QDirIterator>#include<QDebug>intmain(){
    QDirIterator it("/etc", QDirIterator::Subdirectories);
    while (it.hasNext())
        qDebug() << it.next();
    return0;
}

main.pro

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

Build and Run

qmake && make && ./qdir-traverse

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