Generating keyPressEvent in a code generated by pyQT Designer

Generating keyPressEvent in a code generated by pyQT Designer

I Created a code using pyQt Designer in ui and changed it to py code.
Now i want to add some Keypress events to my this i.e. say if i click on
keyboard key with numeric 3 , my label should have text 3 on it or it just
print "Hi"
I have already checked a lot of forums over internet and found that its
best to reimplement keyPressEvent to use keyboard events . I tried that
however somehow i am not able to make it work in the code generated by
pyQT designer .
Below is the code generated by pyQT designer . I have put the code of
keyPressEvent re implementation in it as well , however it dosent work :
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)
MainWindow.setFocus()
def keyPressEvent(self, qKeyEvent):
print "hi"
print(qKeyEvent.key())
if qKeyEvent.key() == QtCore.Qt.Key_Return:
print('Enter pressed')
else:
super(Ui_MainWindow).keyPressEvent(qKeyEvent)
self.centralwidget = QtGui.QWidget(MainWindow)
self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
self.horizontalLayoutWidget = QtGui.QWidget(self.centralwidget)
self.horizontalLayoutWidget.setGeometry(QtCore.QRect(40, 10, 721,
80))
self.horizontalLayoutWidget.setObjectName(_fromUtf8("horizontalLayoutWidget"))
self.horizontalLayout =
QtGui.QHBoxLayout(self.horizontalLayoutWidget)
self.horizontalLayout.setMargin(0)
self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
self.textEdit = QtGui.QLabel(self.centralwidget)
self.textEdit.setGeometry(QtCore.QRect(50, 110, 81, 41))
self.textEdit.setObjectName(_fromUtf8("textEdit"))
self.pushButton = QtGui.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(130, 260, 75, 23))
self.pushButton.setObjectName(_fromUtf8("pushButton"))
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
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))
self.textEdit.setText("I am a label")
self.pushButton.setText(_translate("MainWindow", "PushButton", 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_())
I am new to this forum , it will be helpful if someone can help . I know
this can be achieved by creating another class who inherits QMainWindow
but i want to do this in the same code i.e in the code block generated by
pyQT Designer .
Also please suggest If there is any way to do this without reimplementing
keypressEvent
Thanks