thanks guys for the replies, Danny, your explanation helped alot, i'll have a go on Alan Gaud's tutorial. super thanks
On Mon, May 26, 2014 at 9:04 AM, Danny Yoo <d...@hashcollision.org> wrote: > > > ---------- Forwarded message ---------- > From: diliup gabadamudalige <dili...@gmail.com> > Date: Sunday, May 25, 2014 > Subject: [Tutor] class to function > To: Danny Yoo <d...@hashcollision.org> > > > Is it wrong to say that __init__() is to initialize all the conditions you > setupin the class? That's how i see it. > I give below the way I see a class and it's workings. Please Correct if any > mistakes. > > Say you have a class for a Spaceship > Class Spaceship(): > > under the def __init__(): > you set up all the details you want the spaceship to have. For example, > self.engine=100 > self. guns=100 > self.shield=250 > self.life=5 > > self if the Spaceship which will be built using the details given under the > init in the Class Spaceship. So a class is a blu print to build the space > ship and the init function contains all the things the space ship will > contain. > Now when you want a ne space ship say a RED one > you can call the class with > RedShip=Spaceship() > and you can now giv e a new character to the space ship. A colour! like this > RedShip.colour=Red > Now along with the > RedShip.enging=100 > RedShip.guns=100 > RedShip.shield=250 > RedShip.life=5 > the RedShip also has a NEW ATTRIBUTE. Colour. > RedShip.colour=Red > > The def__init__() can also be setup so that you can give all the attributes > its values like this. > def__init__(power,bullets,energy,life) > > RedShip.enging=power > RedShip.guns=bullets > RedShip.shield=energy > RedShip.life=life > > this way each ship can have different attributes. But they are all > Spaceships. > > > > > On Mon, May 26, 2014 at 6:38 AM, Danny Yoo <d...@hashcollision.org> wrote: >> >> > i am trying to understand this code: >> > http://nbviewer.ipython.org/gist/BenLangmead/6665861 >> >> I'm slightly familiar with the purpose of the code. It's constructing >> a Suffix Tree, though not in linear time. >> >> Reading the code... ah. I see. This is enumerating through all >> suffixes, and building it by repeated insertion into a trie. >> >> http://en.wikipedia.org/wiki/Trie >> >> The classes are used here to represent structured data and operations >> to be performed on that structured data. The code fundamentally has a >> structured value called a Node, with two fields to represent the >> string label and the links to other nodes. >> >> >> >> Aside: there is a very good book by Dan Gusfield that talks about >> suffix trees and how to construct them called "Algorithms on Strings, >> Trees and Sequences: Computer Science and Computational Biology" >> >> >> http://www.amazon.com/Algorithms-Strings-Trees-Sequences-Computational/dp/0521585198 >> >> which you may want to look at if you're interested in these algorithms. >> >> >> It is probably not a good idea to try to intermix trying to understand >> an algorithm like this at the same time as you're learning basic >> features in your programming language. Consider a slightly simpler >> example to learn about "classes", apart from the algorithms you are >> studying. Most good Python tutorials should cover how to use classes >> to build structured data and manipulate it. Alan Gauld's Python >> tutorial, for example, should have a section on this. >> >> http://www.alan-g.me.uk/tutor/tutclass.htm >> _______________________________________________ >> Tutor maillist - Tutor@python.org >> To unsubscribe or change subscription options: >> https://mail.python.org/mailman/listinfo/tutor > > > > > -- > Diliup Gabadamudalige > > http://www.diliupg.com > http://soft.diliupg.com/ > > ********************************************************************************************** > This e-mail is confidential. It may also be legally privileged. If you are > not the intended recipient or have received it in error, please delete it > and all copies from your system and notify the sender immediately by return > e-mail. Any unauthorized reading, reproducing, printing or further > dissemination of this e-mail or its contents is strictly prohibited and may > be unlawful. Internet communications cannot be guaranteed to be timely, > secure, error or virus-free. The sender does not accept liability for any > errors or omissions. > ********************************************************************************************** > > > > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > https://mail.python.org/mailman/listinfo/tutor > -- many thanks mat _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
