pyqt4

#!/usr/bin/python

# inputdialog.py

import sys
from PyQt4 import QtGui
from PyQt4 import QtCore


class InputDialog(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.currentResult = FuzzNumber()

        self.setWindowTitle('Fuzzy stuff')

        self.layout = QtGui.QGridLayout()

        self.addButtons()

        #self.button = QtGui.QPushButton('Calculate', self)
        #self.layout.addWidget( self.button )

        self.resultLabel = QtGui.QLabel(self)

        self.lineedit = QtGui.QLineEdit(self)
        self.layout.addWidget( self.resultLabel, 0, 1, 1, 2 )
        self.layout.addWidget( self.lineedit, 1, 1, 1, 2 )
        self.connect(self.additionButton, QtCore.SIGNAL('clicked()'), self.add)

        self.setLayout( self.layout )

    def addButtons(self):
        self.additionButton = QtGui.QPushButton('+', self)
        self.layout.addWidget( self.additionButton, 2, 1 )

        self.multiplicationButton = QtGui.QPushButton('*', self)
        self.layout.addWidget( self.multiplicationButton, 2, 2 )

    def add(self):
        # func()
        CONNECT
        self.currentResult = self.currentResult() + FuzzNumber( self.lineedit.getInte )
        self.resultLabel.setText( self.lineedit.text() + self.resultLabel.text() )
        self.lineedit.clear()
        self.resultLabel.show()


app = QtGui.QApplication(sys.argv)
icon = InputDialog()
icon.show()
app.exec_()