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Re: How to turn a string into a list of integers?

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Am 05.09.2014 um 10:42 schrieb cl@isbd.net:

> Joshua Landau <joshua@landau.ws> wrote:
>> On 3 September 2014 15:48,  <cl@isbd.net> wrote:
>>> Peter Otten <__peter__@web.de> wrote:
>>>>>>> [ord(c) for c in "This is a string"]
>>>> [84, 104, 105, 115, 32, 105, 115, 32, 97, 32, 115, 116, 114, 105, 110, 103]
>>>> 
>>>> There are other ways, but you have to describe the use case and your Python
>>>> version for us to recommend the most appropriate.
>>>> 
>>> That looks OK to me.  It's just for outputting a string to the block
>>> write command in python-smbus which expects an integer array.
>> 
>> Just be careful about Unicode characters.
> 
> I have to avoid them completely because I'm sending the string to a
> character LCD with a limited 8-bit only character set.


Could someone please explain the following behavior to me:
Python 2.7.7, MacOS 10.9 Mavericks

>>> import sys
>>> sys.getdefaultencoding()
'ascii'
>>> [ord(c) for c in 'AÄ']
[65, 195, 132]
>>> [ord(c) for c in u'AÄ']
[65, 196]

My obviously wrong understanding:
‚AÄ‘ in ‚ascii‘ are two characters
     one with ord A=65 and
     one with ord Ä=196 ISO8859-1 <depends on code table>
     —-> why [65, 195, 132]
u’AÄ’ is an Unicode string
     —-> why [65, 196]

It is just the other way round as I would expect.



Thank you
-- 
Kurt Mueller, kurt.alfred.mueller@gmail.com

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Thread

How to turn a string into a list of integers? cl@isbd.net - 2014-09-03 13:27 +0100
  Re: How to turn a string into a list of integers? Peter Otten <__peter__@web.de> - 2014-09-03 14:52 +0200
    Re: How to turn a string into a list of integers? cl@isbd.net - 2014-09-03 15:48 +0100
      Re: How to turn a string into a list of integers? Joshua Landau <joshua@landau.ws> - 2014-09-04 22:06 +0100
        Re: How to turn a string into a list of integers? cl@isbd.net - 2014-09-05 09:42 +0100
          Re: How to turn a string into a list of integers? Kurt Mueller <kurt.alfred.mueller@gmail.com> - 2014-09-05 19:56 +0200
            Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-06 15:47 +1000
              Re: How to turn a string into a list of integers? Peter Otten <__peter__@web.de> - 2014-09-06 10:22 +0200
                Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-06 21:17 +1000
              Re: How to turn a string into a list of integers? Kurt Mueller <kurt.alfred.mueller@gmail.com> - 2014-09-06 14:15 +0200
                Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-07 04:19 +1000
                Re: How to turn a string into a list of integers? Kurt Mueller <kurt.alfred.mueller@gmail.com> - 2014-09-06 21:28 +0200
                Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-07 11:47 +1000
                Re: How to turn a string into a list of integers? MRAB <python@mrabarnett.plus.com> - 2014-09-07 15:52 +0100
                Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-08 03:02 +1000
                Re: How to turn a string into a list of integers? Rustom Mody <rustompmody@gmail.com> - 2014-09-07 10:53 -0700
                Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-08 04:08 +1000
                Re: How to turn a string into a list of integers? Rustom Mody <rustompmody@gmail.com> - 2014-09-07 11:34 -0700
                Re: How to turn a string into a list of integers? Chris Angelico <rosuav@gmail.com> - 2014-09-08 10:14 +1000
                Re: How to turn a string into a list of integers? Marko Rauhamaa <marko@pacujo.net> - 2014-09-08 08:44 +0300
                Re: How to turn a string into a list of integers? Chris Angelico <rosuav@gmail.com> - 2014-09-08 15:53 +1000
                Re: How to turn a string into a list of integers? Terry Reedy <tjreedy@udel.edu> - 2014-09-08 03:41 -0400
                Re: How to turn a string into a list of integers? Chris Angelico <rosuav@gmail.com> - 2014-09-08 01:04 +1000
                Re: How to turn a string into a list of integers? Roy Smith <roy@panix.com> - 2014-09-07 11:40 -0400
                Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-08 04:00 +1000
                Re: How to turn a string into a list of integers? Chris Angelico <rosuav@gmail.com> - 2014-09-08 10:12 +1000
              Re: How to turn a string into a list of integers? Chris Angelico <rosuav@gmail.com> - 2014-09-06 22:23 +1000
          Re: How to turn a string into a list of integers? Chris “Kwpolska” Warrick <kwpolska@gmail.com> - 2014-09-05 20:25 +0200
          Re: How to turn a string into a list of integers? Kurt Mueller <kurt.alfred.mueller@gmail.com> - 2014-09-05 21:16 +0200
          Re: How to turn a string into a list of integers? Kurt Mueller <kurt.alfred.mueller@gmail.com> - 2014-09-05 22:41 +0200
      Re: How to turn a string into a list of integers? Chris Angelico <rosuav@gmail.com> - 2014-09-05 10:12 +1000
      Re: How to turn a string into a list of integers? Ian Kelly <ian.g.kelly@gmail.com> - 2014-09-04 20:09 -0600
      Re: How to turn a string into a list of integers? Chris Angelico <rosuav@gmail.com> - 2014-09-05 12:15 +1000
        Re: How to turn a string into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-06 14:27 +1000
  Re: How to turn a string into a list of integers? obedrios@gmail.com - 2014-09-03 07:30 -0700

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