[EMAIL PROTECTED] said unto the world upon 06/01/2007 10:46 AM:
> I think I may have sent an incomplete version of this question a moment ago
> (sorry). Here is the complete question:
>
> I'm designing something along the lines of a flash card program. It's mostly
> just an exercise in learning Python, but I'd like it to be at least
> marginally usable when I'm done. So I'm looking for comments/suggestions on
> the key pieces of the
> design: the questions and the flash card deck:
> Psudo-code of current design:
>
> class Deck():
> """Provides managment and informational functions about a set of
> questions to be asked
> methods incldue:
> __init__(questions) -- takes a list of question and creates a
> new deck with these questions.
> add_question(self,question) -- Adds a question to the current
> deck
> remove_question(self,question) -- returns True if the question
> was removed, False otherwise
> get_question() -- Returns the next unanswered question in the
> deck
> get_stats() -- returns a tuple containing: number_asked,
> number_correct, number_remaining
> shuffle_deck() -- shuffles the order of the remaining
> questions.
> Deck Overrived the __len__ function so that the len returned is
> the number of questions in the deck."
>
>
> class Question():
> """Provides questions to be asked
> methods:
> __init__(self,question,answer) -- question string representing the
> question.
> answer can
> be a text string, a tupple (for multiple correct answers)
> or an
> object implementing an is_correct() method that returns a boolean
>
> check_answer(self,answer) -- tests to see if the answer is correct and
> returns a boolean
> """
>
>
> Mostly I'm wondering, is this over-kill? The idea is to allow for the deck to
> be used for as wide a variety of purposes as possible. Also, I want to make
> it easy to write code that generates decks. Is this design over-kill?
>
> Any comments/suggestions welcome.
>
> Thanks,
>
> David
> _______________________________________________
> Tutor maillist - [email protected]
> http://mail.python.org/mailman/listinfo/tutor
>
David,
I'd make Deck and Question subclass object so as to have new-style
classes, as in:
class Deck(object):
# code here
If you don't know about the difference between classic classes and
new-style, you needn't worry about it for now. There are a number of
ways in which new-style are better, though.
I also have a suggestion that you might want to think about after you
get the basic functionality working. When I did something similar, I
used the pickle module make my Questions persistent between sessions,
and had each Question keep track of how many times it has been asked
and correctly answered. I then had my Deck.get_question pick which
Question to ask in a way that favoured both Questions that had been
rarely asked, and those that had the highest error rates.
Best,
Brian vdB
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