#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
from PyQt4 import QtGui

class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()

        self.initUI()

    def initUI(self):
        self.btn = QtGui.QPushButton('OK', self)
        self.btn.move(20, 20)
        self.btn.clicked.connect(self.showDialog)
        self.le = QtGui.QLineEdit(self)
        self.le.move(130, 22)
        self.setGeometry(300, 300, 290, 150)
        self.setWindowTitle('Input dialog')
        self.show()
    def showDialog(self):
        text, ok = QtGui.QInputDialog.getText(self, 'Input Dialog',
        'Podaj slowo:')
        if ok:
            self.le.setText(str(text))
def main():
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())
if __name__ == '__main__':
    main()