I am learning PySide and am trying to implement widgets within a main window. My goal right now is very simple: I want to place a QLabel, with independently defined event handling, inside a main window that has its own event handling: # -*- coding: utf-8 -*-from PySide import QtGui, QtCoreclass MainWindow(QtGui.QWidget):    '''Main window lets user know when window was clicked on non-widget space'''    def __init__(self):        QtGui.QWidget.__init__(self)        self.initUI()        def initUI(self):        self.myLabel=TalkingQLabel(Don't mess with Breakfast!, self)         self.myLabel.setGeometry(50, 50, 200, 120)               self.setGeometry(300,200,300,250)        self.show()    def mousePressEvent(self, event):        print Well, you pressed in main window!class TalkingQLabel(QtGui.QLabel):    '''QLab el that indicates when it was pressed'''    def __init__(self, txt, parent):        QtGui.QLabel.__init__(self, txt, parent)        self.initUI()    def initUI(self):        self.setAlignment(QtCore.Qt.AlignCenter)        self.setStyleSheet(QLabel { color: rgb(255, 255, 0); font-size: 15px; background-color: rgb(0,0,0)})    def mousePressEvent(self, event):        print This time you pressed in a label                def main():    import sys    qtApp=QtGui.QApplication(sys.argv)    myTalker=MainWindow()    sys.exit(qtApp.exec_())if __name__==__main__:    main()Was it good practice to have two separate classes like this for Qt programming, or should I have defined TalkingQLabel within MainWindow because they are in a parent-child relationship, and always will be in this application? Is there a standard within the Qt community I should know about, especially in cases when one widget is a child of another?Related pages:https://stackoverflow.com/questions/330/should-i-use-nested-classes-in-this-caseNested class or two separate classes?https://stackoverflow.com/questions/1581931/should-i-refactor-static-nested-classes-in-java-into-separate-classeshttps://softwareengineering.stackexchange.com/questions/171790/are-nested-classes-under-rated
Implementing widgets within a main window
python;gui;pyqt;pyside