<snip>
> def calc_total(self):
> """Update the text widget if they order Spaghetti Bolognese. """
> try:
> int(spag_ent.get())
> except:
> message="You have to enter a number in the quantity box. \n"
<snip>
>
>The 'calc_total' function is supposed to calculate the users bill and then
>display it in the text widget, but every time I try it, it comes up as 0. Can
>anyone help me?
>
It struck me that you're not assigning int(spag_ent.get()) to any variable:
spaghettiAmount = int(spag_ent.get())
Moreover, I'd try to create the program in such a way that it doesn't become a
headache to change the menu (for instance, to add a new pasta).
Perhaps by using a dctionary as a parameter: menu = {"spaghetti": 4.50,
"macaroni": 2.10, "calzone": 6.00}
Your example reminds me of one chapter of Head First Design Patterns
(O'Reilly). Would be interesting to compare your approach with the one in the
book.
Albert-Jan
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