[Tutor] class question

[Tiger12506]

Ooops, didn't see Alan's post before I sent this...

JS

>> Your second way seems to make more sense. And instead of raising the
>> error, why not just print it:
>
> There is a very good reason for this and it's important that you 
> understand
> it to write good code. If you use a print statement, you break the benefit
> of encapsulation.
>
> If you were to use that class in a GUI application, for example, you would
> never know if the account had become overdrawn. Only by using an exception
> could you use that class effectively in both circumstances, and in the 
> same
> way!
>
> a = BankAccount()
> try:
>  a.withdraw(50)
> except:
>  notify_error()
>
> Where notify error depends on how you want to communicate that information
> to the end-user. (messagebox, display, stdout, stderr, file, etc)
>
> JS