cleaner way to write this try/except statement?

[John Salerno]

John Salerno wrote:
> The code to look at is the try statement in the NumbersValidator class, 
> just a few lines down. Is this a clean way to write it? i.e. is it okay 
> to have all those return statements? Is this a good use of try? Etc.

Ok, I came up with this. It looks much nicer, I think, though I'm still 
unsure if it's good to have three separate return statements:

def Validate(self, parent):
         text = self.GetWindow().GetValue()

         try:
             if int(text) != 0:
                 return True
             else:
                 self.error_message()
                 return False
         except ValueError:
             self.error_message()
             return False

But instead of a pop-up box for the error, I've decided to take Peter's 
advice and change the status text instead (plus color the input box). 
But here's an ultra OO newbie question: how do I refer to my frame's 
children from within the validator class? :)