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Re: turn list of letters into an array of integers

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On 10/24/2012 1:23 AM, seektime wrote:
> Here's some example code. The input is a list which is a "matrix" of letters:
>     a  b  a
>     b  b  a
>
> and I'd like to turn this into a Python array:
>
>    1 2 1
>    2 2 1
>
> so 1 replaces a, and 2 replaces b.

If you are going to replace single characters (letters) with single 
characters (digits), use maketrans and translate.

 >>> 'a b c'.translate(str.maketrans('abc', '123'))
'1 2 3'

-- 
Terry Jan Reedy

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turn list of letters into an array of integers seektime <michael.j.krause@gmail.com> - 2012-10-23 22:23 -0700
  Re: turn list of letters into an array of integers Demian Brecht <demianbrecht@gmail.com> - 2012-10-23 22:45 -0700
  Re: turn list of letters into an array of integers David Hutto <dwightdhutto@gmail.com> - 2012-10-24 01:50 -0400
  Re: turn list of letters into an array of integers Demian Brecht <demianbrecht@gmail.com> - 2012-10-23 22:51 -0700
  Re: turn list of letters into an array of integers Demian Brecht <demianbrecht@gmail.com> - 2012-10-23 22:54 -0700
  Re: turn list of letters into an array of integers Chris Rebert <clp2@rebertia.com> - 2012-10-23 23:07 -0700
    Re: turn list of letters into an array of integers 88888 Dihedral <dihedral88888@googlemail.com> - 2012-10-24 05:03 -0700
      Re: turn list of letters into an array of integers Robert Kern <robert.kern@gmail.com> - 2012-10-24 13:22 +0100
    Re: turn list of letters into an array of integers 88888 Dihedral <dihedral88888@googlemail.com> - 2012-10-24 05:03 -0700
    Re: turn list of letters into an array of integers seektime <michael.j.krause@gmail.com> - 2012-10-24 21:27 -0700
      Re: turn list of letters into an array of integers Chris Rebert <clp2@rebertia.com> - 2012-10-24 21:52 -0700
    Re: turn list of letters into an array of integers seektime <michael.j.krause@gmail.com> - 2012-10-24 21:27 -0700
  Re: turn list of letters into an array of integers Peter Otten <__peter__@web.de> - 2012-10-24 09:47 +0200
  Re: turn list of letters into an array of integers Peter Otten <__peter__@web.de> - 2012-10-24 11:04 +0200
  Re: turn list of letters into an array of integers Terry Reedy <tjreedy@udel.edu> - 2012-10-24 11:56 -0400
  Re: turn list of letters into an array of integers MRAB <python@mrabarnett.plus.com> - 2012-10-24 18:05 +0100
  Re: turn list of letters into an array of integers wxjmfauth@gmail.com - 2012-10-24 10:27 -0700
    Re: turn list of letters into an array of integers Demian Brecht <demianbrecht@gmail.com> - 2012-10-24 10:36 -0700
  Re: turn list of letters into an array of integers Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-10-24 15:57 -0400
  [OT] Re: turn list of letters into an array of integers Peter Otten <__peter__@web.de> - 2012-10-25 07:47 +0200
    Re: [OT] Re: turn list of letters into an array of integers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-10-25 07:49 +0000
      Re: [OT] Re: turn list of letters into an array of integers Peter Otten <__peter__@web.de> - 2012-10-25 10:25 +0200
      Re: [OT] Re: turn list of letters into an array of integers Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-10-25 09:55 +0100
  RE: turn list of letters into an array of integers "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2012-10-25 21:27 +0000

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