Re: [pygame] Re: Creating several instances of same image

[Daniel Dornhardt <frozensound@gmx.de>]

Jasper Phillips wrote:

> On Mon, 26 Jul 2004, Daniel Dornhardt wrote:
>
>  
> > Jasper Phillips wrote:
> >
> >    
> > > def offset( x, y ):
> > > return (LEFT + x * DISTANCE, TOP + y * DISTANCE)
> > >
> > > alienList = [Alien(offset(x,y)) for x in range(COLUMNS) for y in range(ROWS)]
> > >
> > >      
> > ???
> > does it work? :D
> > i pseudo-tried it, it works, cool
> > it surely makes the whole process clearer and much easier to grok (but 
> > not for me...)
> > why does it work?
> >    
> This construct is a part of Python's syntax, called a "list comprehension",
> which was added in Python 2.1 or 2.2.
> http://www.google.com/search?q=python+list+comprehension
>
> You can also add an if clause to the end of a list comprehension, which is
> often usefull.
>
> The syntax takes a bit of getting used to, but in my experience often yields
> clearer code.  I just wish there was a clean way to use it for dictionaries!
>
> -Jasper
>
>
>  
I guess it could actually be usefull for some of the more-complicated 
loops, maybe i'll wrap my head around it sometime...
Thanks for the additional informations!

   Daniel