order (MRO) for bases QDialog, Ui_Dialog

The Method Resolution Order (MRO) for bases QDialog and Ui_Dialog depends on the order in which they are specified when defining the class that inherits from them.

For example, if you define a class like this:

class MyDialog(QDialog, Ui_Dialog):
    def __init__(self):
        QDialog.__init__(self)
        Ui_Dialog.__init__(self)

Then the MRO will be `[MyDialog, QDialog, Ui_Dialog, object]`, which means that the methods and attributes of `MyDialog` will be checked first, followed by those of `QDialog`, then `Ui_Dialog`, and finally `object`.

It's important to note that this order can affect how methods are overridden and inherited, so it's important to be aware of the MRO when designing your class hierarchy.