Python - access variable in another class

Question

I have 1 main window and 1 dialog. Now I need to access variable in main window from dialog.

For example in java we have 2 classes: demo and myclass In my class I have following code: public static int number=5; Then I simply access it using myclass.number.

How to do it in python using quickly ide?

Do I need to import main window in dialog to get access to static variable?

Answer 1

Just pass around your mainwindow instance, something like this:

class MyWindow(Gtk.Window):
    def __init__(self):
        # Do your thing...

        self.spam = "spam'n'eggs"

    def on_opendialog_clicked(self, widget):
        dialog = MyDialog(self)
        dialog.run()
        dialog.destroy()

class MyDialog(Gtk.Dialog):
    def __init__(self, mainwindow):
        # ...

        print(mainwindow.spam)

Have a look at my answer in this question too which is almost similar, only the other way around.

Answer 2

I'm not sure if this is the "pro" way to do it or not, but you can pass it to your variable when you generate it.

I have a file generation dialog I built by giving it the default output dir and default name of file. My code looks like:def __init__(self,parent,output_dir,filename), and when you call it make sure to pass it what it needs, eg. window(output_dir,filename)