From: rwob...@hotmail.com To: da...@ieee.org Subject: RE: [Tutor] question Date: Tue, 28 Sep 2010 19:14:29 +0000 > Date: Tue, 28 Sep 2010 10:49:28 -0400 > From: da...@ieee.org > To: rwob...@hotmail.com; tutor@python.org > Subject: Re: [Tutor] question > > On 9/28/2010 10:22 AM, Roelof Wobben wrote: > > > > > > > >> Date: Tue, 28 Sep 2010 10:02:27 -0400 > >> From: da...@ieee.org > >> To: rwob...@hotmail.com > >> CC: tutor@python.org > >> Subject: Re: [Tutor] question > >> > >> > >> > >> On 2:59 PM, Roelof Wobben wrote: > >>> Hello, > >>> > >>> > >>> Im now studying this page : > >>> http://openbookproject.net/thinkcs/python/english2e/ch16.html > >>> > >>> But I don't get it why aces are now lower then deuces in the cmp function. > >>> > >>> > >>> Roelof > >>> > >>> > >> Why would you be surprised that aces are lower than deuces? If aces are > >> represented by 1, and deuces by 2, then 1 is less than 2. > >> > >> Notice that because self.suit is compared first, an ace of spades is > >> higher than a deuce of hearts. It's only within the same suit that an > >> ace is "less than" a deuce. > >> > >> DaveA > >> > >> > >> > >> > > > > Hello Dave, > > > > > > > > In some games in the Netherlands Aces can have a value of 11 or 1 . > > > > So if Aces are 11 then Deuces is lesser then Aces. > > > > > > > > Can I say that the position of the list is a representation of the value. > > > > > > > > Roelof > > > > > > > The class attribute was assigned as follows: > > ranks = ["narf", "Ace", "2", "3", "4", "5", "6", "7", > "8", "9", "10", "Jack", "Queen", "King"] > > > So "Ace" is at position 1. And if you want an Ace, you'd have to supply a 1 > to the constructor. > > I would certainly agree that in many games this wouldn't be the desired case. > Some games specify aces higher than kings, some have no ordering among face > cards, some let the player choose. > > If the Card class needed to cover all cases, then one might need to make the > __cmp__() method parameterizable, so that at different times, the cards might > sort differently. > > But this is one implementation of the Card class, and hopefully it's > self-consistent in the course. > > > > DaveA > > > > > > Oke, Thanks. Then now figuring out how to solve this problem : Modify __cmp__ so that Aces are ranked higher than Kings So aces with value 1 must be higher then Kings with 11 I think I have to make another rule in the rank part like this If self.rank = Aces and self.rank = Kings then return -1 or 1 Tomorrrow I will investigate this. Roelof
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