apply clicked on table header in pyqt - python-3.x

Question

this is my caller file which helps me generate ui of table where i can write data.the problem here is i want to sort the data when i click on the header of the table according to that column. i can sort the data easily as i have a backend data(not present in this code as it will not be needed here) but i am unable to apply click function on headers of the table. i want to apply clicked.connect on different table header. thanks in advance :)
from table import *
from PyQt4 import QtGui # Import the PyQt4 module we'll need
import sys # We need sys so that we can pass argv to QApplication
import os
from PyQt4.QtGui import *
from PyQt4.QtCore import *
class MainWindow(QMainWindow,Ui_MainWindow):
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self.setupUi(self)
if __name__ == '__main__':
app = QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
this is my table.py which has ui code:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'table.ui'
#
# Created by: PyQt4 UI code generator 4.11.4
#
# WARNING! All changes made in this file will be lost!
from 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(800, 600)
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.gridLayout = QtGui.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.tableWidget = QtGui.QTableWidget(self.centralwidget)
self.tableWidget.setObjectName(_fromUtf8("tableWidget"))
self.tableWidget.setColumnCount(3)
self.tableWidget.setRowCount(3)
item = QtGui.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(0, item)
item = QtGui.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(1, item)
item = QtGui.QTableWidgetItem()
self.tableWidget.setVerticalHeaderItem(2, item)
item = QtGui.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(0, item)
item = QtGui.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(1, item)
item = QtGui.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(2, item)
self.gridLayout.addWidget(self.tableWidget, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 31))
self.menubar.setObjectName(_fromUtf8("menubar"))
MainWindow.setMenuBar(self.menubar)
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))
item = self.tableWidget.verticalHeaderItem(0)
item.setText(_translate("MainWindow", "New Row", None))
item = self.tableWidget.verticalHeaderItem(1)
item.setText(_translate("MainWindow", "New Row", None))
item = self.tableWidget.verticalHeaderItem(2)
item.setText(_translate("MainWindow", "New Row", None))
item = self.tableWidget.horizontalHeaderItem(0)
item.setText(_translate("MainWindow", "Name", None))
item = self.tableWidget.horizontalHeaderItem(1)
item.setText(_translate("MainWindow", "class", None))
item = self.tableWidget.horizontalHeaderItem(2)
item.setText(_translate("MainWindow", "marks", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())

Answer 1

self.connect(self.tableWidget.horizontalHeader(),SIGNAL("sectionClicked(int)"),self.fun)
def fun(self,i):
print("index clicked is"+i)