Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #34186

Re: Conversion of List of Tuples

References <6049bc85-6f8e-429b-a855-ecef47a9d28e@googlegroups.com>
From Chris Kaynor <ckaynor@zindagigames.com>
Date 2012-12-03 12:10 -0800
Subject Re: Conversion of List of Tuples
Newsgroups comp.lang.python
Message-ID <mailman.437.1354565427.29569.python-list@python.org> (permalink)

Show all headers | View raw


On Mon, Dec 3, 2012 at 11:58 AM,  <subhabangalore@gmail.com> wrote:
> Dear Group,
>
> I have a tuple of list as,
>
> tup_list=[(1,2), (3,4)]
> Now if I want to covert as a simple list,
>
> list=[1,2,3,4]
>
> how may I do that?
>
> If any one can kindly suggest? Googling didn't help much.

If you know they are always exactly two levels deep, you can use
nested loops (in comprehension form):
[item for tuple_ in list_ for item in tuple_]

That could also be written how John recommended, in three lines.

>
> Regards,
> Subhabrata.
> --
> http://mail.python.org/mailman/listinfo/python-list

Back to comp.lang.python | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Conversion of List of Tuples subhabangalore@gmail.com - 2012-12-03 11:58 -0800
  Re: Conversion of List of Tuples John Gordon <gordon@panix.com> - 2012-12-03 20:04 +0000
    Re: Conversion of List of Tuples MRAB <python@mrabarnett.plus.com> - 2012-12-03 20:13 +0000
    Re: Conversion of List of Tuples Chris Angelico <rosuav@gmail.com> - 2012-12-04 07:17 +1100
  Re: Conversion of List of Tuples Chris Kaynor <ckaynor@zindagigames.com> - 2012-12-03 12:10 -0800
  Re: Conversion of List of Tuples subhabangalore@gmail.com - 2012-12-03 13:14 -0800
    Re: Conversion of List of Tuples John Gordon <gordon@panix.com> - 2012-12-03 22:02 +0000
    Re: Conversion of List of Tuples Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-03 22:11 +0000
      Re: Conversion of List of Tuples Walter Hurry <walterhurry@lavabit.com> - 2012-12-03 22:43 +0000
  Re: Conversion of List of Tuples Gary Herron <gherron@digipen.edu> - 2012-12-03 12:08 -0800
  Re: Conversion of List of Tuples Alexander Blinne <news@blinne.net> - 2012-12-04 10:44 +0100
    Re: Conversion of List of Tuples Hans Mulder <hansmu@xs4all.nl> - 2012-12-04 12:45 +0100
      Re: Conversion of List of Tuples Neil Cerutti <neilc@norwich.edu> - 2012-12-04 13:54 +0000

csiph-web