OO python - access instance in which object was created?

Question

I'm playing with python and qt a bit. Just for fun. To clarify what i meant with the title of this thread, i'll elaborate on what i'm doing.
I've imported one "mainwindow" widget, and one "regular" widget constructed in qt designer.
The idea is to have a listview in the "mainwidget", and use the regular "widget" as a modal dialog to modify the columns in the "mainwidget".
To do this, this is how it is constructed (roughly);
class applicationForm(QApplication):
this is where i create self.form (from appForm), show it and exec it.
class appForm(mainwindow):
this is where the action occurrs. I create the instance self.dialog (from appDialog) and exec it, and i also reference the listview (self.dialog.listview) since i can't access it from within self.dialog otherwise right? This is a bit clunky since i would like to have access to the whole self.form instance instead. I could reference it from the former class (and reference that to self.dialog), but isn't there a better way to do this?
class appDialog(regularwindow):
This is the modal dialog. Another strange behaviour is that i can't access the (self.dialog.listview i referenced) with self.listview from the __init__ of this clas. So i have to modify the widgets (which need input from the self.listview) to be of any use, _before_ i exec this dialog window in the self.form instance. I can however access self.listview from the methods i've tied with signals from the GUI.
Ideas, suggestions? Am I attacking this little program of mine from the wrong angle? What about the layout?
btw, if my questions are a bit strange - it's because i'm an OOP noob, and i've not used python very much before.

Answer 1

OK, let me rephrase this;
lets say i use wxPython.
3. I have one instance of a class derived from wx.Dialog (modal)
2. in the instance of a class derived from wx.Frame
1. in an instance of a class derived from wx.App
i would like to modify attributes in instance nr 2, but I don't know how to access them from the class of nr 3 other than importing like this;
class dialog(wx.Dialog):
<init>
self.dothis() ### this is only being run by an event handler... no need to illustrate that
class frame(wx.Frame):
<init>
def dothis():
pass
newdialog = dialog(self, variables)
newdialog.dothis = self.dothis ### this is the ugly import....
class app(wx.App):
<init and stuff>
mainframe = frame
mainframe.show
application = app(variables)
application.run
This is not _actual_ code as you see, but just a replica of what i'm trying to do.
Last edited by pelle.k (2007-06-07 23:48:31)