Multiple windows in PyQt4

Question

I have a PyQt program used to render some python objects. I would like to display several objects, each in its own window.

What is the best way to create multi-window applications in PyQt4?

I currently have the following:

from PyQt4 import QtGui

class MainWindow(QtGui.QMainWindow):
    windowList = []

    def __init__(self, animal):
        pass

    def addwindow(self, animal)
        win = MainWindow(animal)
        windowList.append(win)

if __name__=="__main__":
    import sys

    app = QtGui.QApplication(sys.argv)

    win = QMainWindow(dog)
    win.addWindow(fish)
    win.addWindow(cat)

    app.exec_()

However, this approach is not satisfactory since I run into problems when I try to split the MultipleWindows part in my class. For example:

class MultiWindows(QtGui.QMainWindow):
    windowList = []

    def __init__(self, param):
        raise NotImplementedError()

    def addwindow(self, param)
        win = MainWindow(param) # How to call the initializer of the subclass from here?
        windowList.append(win)

class PlanetApp(MultiWindows):
    def __init__(self, planet):
        pass

class AnimalApp(MultiWindows):
    def __init__(self, planet):
        pass

if __name__=="__main__":
    import sys

    app = QtGui.QApplication(sys.argv)

    win = PlanetApp(mercury)
    win.addWindow(venus)
    win.addWindow(jupiter)

    app.exec_()

The above code will call the MainWindow class initializer, not the corresponding subclass, and thus throw an exception.

How can I call a subclass initializer? Is there a more elegant way to do this?

Answer 1

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class MultiWindows(QtGui.QMainWindow):

    def __init__(self, param):
        self.__windows = []

    def addwindow(self, window):
        self.__windows.append(window)

    def show():
        for current_child_window in self.__windows:
             current_child_window.exec_() # probably show will do the same trick

class PlanetApp(QtGui.QDialog):
    def __init__(self, parent, planet):
       QtGui.QDialog.__init__(self, parent)
       # do cool stuff here

class AnimalApp(QtGui.QDialog):
    def __init__(self, parent, animal):
       QtGui.QDialog.__init__(self, parent)
       # do cool stuff here

if __name__=="__main__":
    import sys # really need this here??

    app = QtGui.QApplication(sys.argv)

    jupiter = PlanetApp(None, "jupiter")
    venus = PlanetApp(None, "venus")
    windows = MultiWindows()
    windows.addWindow(jupiter)
    windows.addWindow(venus)

    windows.show()
    app.exec_()

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Answer 2

, , self.__class__(), MultiWindows :

class MultiWindows(QtGui.QMainWindow):
windowList = []

def __init__(self, param):
    raise NotImplementedError()

def addwindow(self, param)
    win = self.__class__(param)
    windowList.append(win)