PyQt : accessing elements from outside the class -

first of all, i'd state question similar this: accessing gui elements outside gui class . since newby in pyqt, more help.

i have design.py file, exported qt designer

# -*- coding: utf-8 -*-  pyqt4 import qtcore, qtgui  try:     _fromutf8 = qtcore.qstring.fromutf8 except attributeerror:     def _fromutf8(s):         return s  try:     _encoding = qtgui.qapplication.unicodeutf8     def _translate(context, text, disambig):         return qtgui.qapplication.translate(context, text, disambig, _encoding) except attributeerror:     def _translate(context, text, disambig):         return qtgui.qapplication.translate(context, text, disambig)  class ui_mainwindow(object):     def setupui(self, mainwindow):         mainwindow.setobjectname(_fromutf8("mainwindow"))         mainwindow.resize(150, 94)         self.centralwidget = qtgui.qwidget(mainwindow)         self.centralwidget.setobjectname(_fromutf8("centralwidget"))         self.lineedit = qtgui.qlineedit(self.centralwidget)         self.lineedit.setgeometry(qtcore.qrect(20, 10, 113, 27))         self.lineedit.setobjectname(_fromutf8("lineedit"))         self.pushbutton = qtgui.qpushbutton(self.centralwidget)         self.pushbutton.setgeometry(qtcore.qrect(30, 40, 85, 27))         self.pushbutton.setobjectname(_fromutf8("pushbutton"))         mainwindow.setcentralwidget(self.centralwidget)         self.statusbar = qtgui.qstatusbar(mainwindow)         self.statusbar.setobjectname(_fromutf8("statusbar"))         mainwindow.setstatusbar(self.statusbar)          self.retranslateui(mainwindow)         qtcore.qmetaobject.connectslotsbyname(mainwindow)      def retranslateui(self, mainwindow):         mainwindow.setwindowtitle(_translate("mainwindow", "mainwindow", none))         self.pushbutton.settext(_translate("mainwindow", "pushbutton", none)) 

which imported main class:

# -*- coding: utf-8 -*-  pyqt4 import qtgui, qtcore import sys import design  class exampleapp(qtgui.qmainwindow, design.ui_mainwindow):     def __init__(self, parent=none):         super(exampleapp, self).__init__(parent)         self.setupui(self)         self.pushbutton.clicked.connect(self.button_function)      def button_function(self):         self.lineedit.settext('results')   def main():     app = qtgui.qapplication(sys.argv)     form = exampleapp()     form.show()     app.exec_()          if __name__ == '__main__':     main()       

so far, good. have created window in press pushbutton , message appears in editline.

this want achieve: want pushbutton trigger function outside class (easy), , function deliver message ediltline (hard). this:

    def button_function(self):         calculations()  def calculations():     # somehow ...     self.lineedit.settext('results')   def main():     app = qtgui.qapplication(sys.argv)     form = exampleapp()     form.show()     app.exec_()          if __name__ == '__main__':     main()       

any thought appreciated.

this need

    def button_function(self):         calculations(self)  def calculations(obj):     obj.lineedit.settext('results')