pyqt_print_file_names.py

import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *


def file_names():
    folder = QFileDialog.getExistingDirectory()
    files = QDir(folder).entryList(QDir.Files)
    for file in files:
        print(file)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    file_names()