Re: use a loop to create lists

From	Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject	Re: use a loop to create lists
Date	2013-04-11 18:17 -0400
Organization	> Bestiaria Support Staff <
References	(3 earlier) <5166A297.70104@th-nuernberg.de> <CAOjpqbM80RTXQsxgLJ9R_5X8uezWZQKcZ3F_fN8_vuq1D7_JoA@mail.gmail.com> <CAOjpqbMnZ_17iDj12qFqKU8sTEm7-QdYQAgi5T21R7k6kXFHgg@mail.gmail.com> <5166B345.8080200@th-nuernberg.de> <CAOjpqbOVME8dUXus9zBSLYCa+fJ8QsQYXd7sYw9RArfPHnHhKQ@mail.gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.492.1365718661.3114.python-list@python.org> (permalink)

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On Thu, 11 Apr 2013 16:11:13 +0200, Franz Kelnreiter
<kelnreiter@gmail.com> declaimed the following in
gmane.comp.python.general:

> On Thu, Apr 11, 2013 at 2:57 PM, Thomas Goebel <
> Thomas.Goebel@ohm-hochschule.de> wrote:
> 
> > ...
> > Which is the same as:
> > f = {'list_' + str(n):[m for m in range(3)] for n in range(3)}
> >
> 
> Thomas, thank you for your patience and your long explanation! Now I
> understand better this shorthand expression of one single 'pythonic' ;)
> line.
> But didnt you miss square brackets:
> 
> f = {'list_' + str(n):[[m for m in range(3)] for n in range(3)]}
> 
	Without the second set of square brackets, the result is a generator
expression/comprehension -- which came in a few versions after list
comprehensions did.

	However, your position in locking the "n" inside the right hand, but
you need "n" on the left too...

	Try moving the first [ to the beginning -- {["list....

	(NO PROMISES -- I DIDN'T TEST}
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
        wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

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use a loop to create lists martaamunar@gmail.com - 2013-04-10 01:40 -0700
  Re: use a loop to create lists Chris Angelico <rosuav@gmail.com> - 2013-04-10 18:52 +1000
  Re: use a loop to create lists Dave Angel <davea@davea.name> - 2013-04-10 08:36 -0400
  Re: use a loop to create lists rusi <rustompmody@gmail.com> - 2013-04-10 08:31 -0700
  Re: use a loop to create lists Thomas Goebel <Thomas.Goebel@ohm-hochschule.de> - 2013-04-10 15:55 +0200
  Fwd: use a loop to create lists Franz Kelnreiter <kelnreiter@gmail.com> - 2013-04-11 14:11 +0200
  Re: use a loop to create lists Thomas Goebel <Thomas.Goebel@ohm-hochschule.de> - 2013-04-11 14:57 +0200
  Re: use a loop to create lists Chris Angelico <rosuav@gmail.com> - 2013-04-11 23:22 +1000
  Re: Fwd: use a loop to create lists Thomas Goebel <Thomas.Goebel@ohm-hochschule.de> - 2013-04-11 15:43 +0200
  Re: use a loop to create lists Franz Kelnreiter <kelnreiter@gmail.com> - 2013-04-11 16:11 +0200
  Re: use a loop to create lists Thomas Goebel <Thomas.Goebel@ohm-hochschule.de> - 2013-04-11 16:33 +0200
  Re: Fwd: use a loop to create lists Franz Kelnreiter <kelnreiter@gmail.com> - 2013-04-11 16:33 +0200
  Re: use a loop to create lists Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-04-11 18:17 -0400

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