use locate . to get every.txt file

import sys
import fnmatch
from PySide.QtCore import *
from PySide.QtGui import *


class Ui_MainWindow(QWidget):

    def __init__(self, parent=None):
        super(Ui_MainWindow, self).__init__(parent)
        self.setupUi()

    def setupUi(self):
        self.file_list = []
        self.filter_label = QLabel('Filter:')
        self.filter_line_edit = QLineEdit()
        self.main_list_W = QListWidget()
        self.total_label = QLabel('0')

        grid = QGridLayout()
        grid.setSpacing(10)

        grid.addWidget(self.filter_label, 1, 0)
        grid.addWidget(self.filter_line_edit, 1, 1)
        grid.addWidget(self.main_list_W, 2, 1, 4, 1)
        grid.addWidget(self.total_label, 5, 0)
        self.setLayout(grid)
        self.setGeometry(300, 300, 350, 300)

        self.filter_line_edit.textChanged[str].connect(self.on_text_change)
        self.show()
        self.do_shit(self)

    def do_shit(self, window):
        with open('every.txt') as f:
            self.file_list = f.read().splitlines()
        f.close()

        self.main_list_W.addItems(self.file_list)
        self.total_label.setText(str(len(self.file_list)))

    def on_text_change(self, text):
        self.main_list_W.clear()
        filtered = fnmatch.filter(self.file_list, '*{}*'.format(text))
        self.main_list_W.addItems(filtered)
        self.total_label.setText(str(len(filtered)))

if __name__ == "__main__":
    app = QApplication(sys.argv)
    ui = Ui_MainWindow()
    sys.exit(app.exec_())