Qt 4.8 Model/View Tutorial - Part 3

The following code is based on the Qt Model/View Tutorial - 2.3 A Clock Inside a Table Cell.

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

'''
    PyQt4 conversion of Qt Model-View Tutorial
    
        The current time is displayed and updated
        every second.
        
    NOTES:
    =====
    A 'QTimer' is added to '__init__()'
    A 'slot', 'timerHit()', is added and connected to the timer
    The clock is created in 'data()'
    
last modified: 2012-01-27 jg
ref:
    http://developer.qt.nokia.com/doc/qt-4.8/modelview.html#2-3-a-clock-inside-a-table-cell
    
'''
from PyQt4.QtGui import (QApplication, QTableView)
from PyQt4.QtCore import (Qt, QAbstractTableModel, QModelIndex,
                          QTimer, QTime, pyqtSlot)

class MyModel(QAbstractTableModel):
    def __init__(self, parent=None):    # initialise base class
        super(MyModel, self).__init__(parent)

        timer = QTimer(self)
        timer.setInterval(1000)     # 1 second
        timer.timeout.connect(self.timerHit)
        timer.start()

    @pyqtSlot()
    def timerHit(self):
        topLeft = self.createIndex(0, 0)
        self.dataChanged.emit(topLeft, topLeft)

    def rowCount(self, index=QModelIndex()):
        return 2

    def columnCount(self, index=QModelIndex()):
        return 3

    def data(self, index, role):
        row = index.row()
        col = index.column()

        if role == Qt.DisplayRole:
            if (row == 0 and col == 0):
                return QTime.currentTime().toString()
        else:
            return None

# main ========================================================================

if __name__ == '__main__':
    import sys

    app = QApplication(sys.argv)
    tv = QTableView()

    myModel = MyModel()
    tv.setModel(myModel)
    tv.setWindowTitle("A Clock inside a Cell")
    tv.show()

    sys.exit(app.exec_())