Re: Changing filenames from Greeklish => Greek (subprocess complain)

Newsgroups	comp.lang.python
Date	2013-06-10 02:59 -0700
References	(6 earlier) <5b0d3d7c-e3a4-436d-a55f-26bd40064fd5@googlegroups.com> <51b475b0$0$30001$c3e8da3$5496439d@news.astraweb.com> <a64ba08f-2616-4715-818c-073f3d1e2ffb@googlegroups.com> <mailman.2959.1370852149.3114.python-list@python.org> <c6c9a67a-8eab-41e3-b8bb-d013fd7805b5@googlegroups.com>
Message-ID	<349f7474-fce3-4891-8eb2-92fc53606fb2@googlegroups.com> (permalink)
Subject	Re: Changing filenames from Greeklish => Greek (subprocess complain)
From	Νικόλαος Κούρας <nikos.gr33k@gmail.com>

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> >>>> s = 'α' 
> >>>> s.encode('utf-8') 
> > b'\xce\xb1' 

'b' stands for binary right? 
 b'\xce\xb1' = we are looking at a byte in a hexadecimal format? 
if yes how could we see it in binary and decimal represenation? 
  
> > I see that the encoding of this char takes 2 bytes. But why two exactly? 
> > How do i calculate how many bits are needed to store this char into bytes? 
  
> Because utf-8 takes 1 to 4 bytes to encode characters 

Since 2^8 = 256, utf-8 should store the first 256 chars of unicode charset using 1 byte. 

Also Since 2^16 = 65535, utf-8 should store the first 65535 chars of unicode charset using 2 bytes and so on. 

But i know that this is not the case. 
But i dont understand why. 


> >>>> s = 'a' 
> >>>> s.encode('utf-8') 
> > b'a' 
> utf-8 takes ASCII as it is, as 1 byte. They are the same 

EBCDIC and ASCII and Unicode are charactet sets, correct? 

iso-8859-1, iso-8859-7, utf-8, utf-16, utf-32 and so on are encoding methods, right?

Thread

Re: Changing filenames from Greeklish => Greek (subprocess complain) Cameron Simpson <cs@zip.com.au> - 2013-06-07 18:53 +1000
  Re: Changing filenames from Greeklish => Greek (subprocess complain) alex23 <wuwei23@gmail.com> - 2013-06-07 02:41 -0700
  Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-07 04:53 -0700
    Re: Changing filenames from Greeklish => Greek (subprocess complain) MRAB <python@mrabarnett.plus.com> - 2013-06-07 15:29 +0100
      Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-07 11:52 -0700
        Re: Changing filenames from Greeklish => Greek (subprocess complain) Zero Piraeus <schesis@gmail.com> - 2013-06-07 15:31 -0400
        Re: Changing filenames from Greeklish => Greek (subprocess complain) MRAB <python@mrabarnett.plus.com> - 2013-06-07 21:45 +0100
        Re: Changing filenames from Greeklish => Greek (subprocess complain) Zero Piraeus <schesis@gmail.com> - 2013-06-07 19:24 -0400
        Re: Changing filenames from Greeklish => Greek (subprocess complain) Cameron Simpson <cs@zip.com.au> - 2013-06-08 12:52 +1000
          Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-07 23:49 -0700
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Chris Angelico <rosuav@gmail.com> - 2013-06-08 16:58 +1000
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-08 07:26 +0000
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Chris Angelico <rosuav@gmail.com> - 2013-06-08 17:40 +1000
            Re: Changing filenames from Greeklish => Greek (subprocess complain) MRAB <python@mrabarnett.plus.com> - 2013-06-08 17:32 +0100
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-08 09:53 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-08 10:35 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) MRAB <python@mrabarnett.plus.com> - 2013-06-08 18:48 +0100
    Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-07 15:33 +0000
    Re: Changing filenames from Greeklish => Greek (subprocess complain) Cameron Simpson <cs@zip.com.au> - 2013-06-08 12:49 +1000
    Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-08 21:01 +0300
      Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-08 19:01 +0000
        Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-08 14:14 -0700
          Re: Changing filenames from Greeklish => Greek (subprocess complain) Cameron Simpson <cs@zip.com.au> - 2013-06-09 08:32 +1000
          Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 07:46 +0300
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-09 06:25 +0000
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Cameron Simpson <cs@zip.com.au> - 2013-06-09 18:02 +1000
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 02:03 -0700
        Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-08 14:21 -0700
          Re: Changing filenames from Greeklish => Greek (subprocess complain) Chris Angelico <rosuav@gmail.com> - 2013-06-09 08:10 +1000
        Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 01:11 -0700
    Re: Changing filenames from Greeklish => Greek (subprocess complain) Chris Angelico <rosuav@gmail.com> - 2013-06-09 04:47 +1000
      Re: Changing filenames from Greeklish => Greek (subprocess complain) nagia.retsina@gmail.com - 2013-06-08 22:09 -0700
        Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-09 06:45 +0000
          Re: Changing filenames from Greeklish => Greek (subprocess complain) nagia.retsina@gmail.com - 2013-06-09 00:00 -0700
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-09 08:15 +0000
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 02:14 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 03:32 -0700
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Cameron Simpson <cs@zip.com.au> - 2013-06-09 19:16 +1000
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-09 12:36 +0000
                Re: Changing filenames from Greeklish => Greek (subprocess complain) nagia.retsina@gmail.com - 2013-06-09 10:25 -0700
          Re: Changing filenames from Greeklish => Greek (subprocess complain) Lele Gaifax <lele@metapensiero.it> - 2013-06-09 10:55 +0200
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 02:08 -0700
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Lele Gaifax <lele@metapensiero.it> - 2013-06-09 11:20 +0200
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 02:38 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Andreas Perstinger <andipersti@gmail.com> - 2013-06-09 14:24 +0200
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-09 13:13 +0000
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Benjamin Kaplan <benjamin.kaplan@case.edu> - 2013-06-09 13:05 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 02:42 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 03:37 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Larry Hudson <orgnut@yahoo.com> - 2013-06-10 00:51 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-10 01:11 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Larry Hudson <orgnut@yahoo.com> - 2013-06-11 00:20 -0700
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-09 11:50 +0000
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 05:18 -0700
          Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 02:00 -0700
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Cameron Simpson <cs@zip.com.au> - 2013-06-09 19:12 +1000
              Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-09 02:20 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Benjamin Kaplan <benjamin.kaplan@case.edu> - 2013-06-09 13:01 -0700
            Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-09 12:31 +0000
              Re: Changing filenames from Greeklish => Greek (subprocess complain) nagia.retsina@gmail.com - 2013-06-10 00:10 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Andreas Perstinger <andipersti@gmail.com> - 2013-06-10 10:15 +0200
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-10 01:54 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-10 02:59 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Andreas Perstinger <andipersti@gmail.com> - 2013-06-10 12:42 +0200
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-10 11:59 +0000
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Νικόλαος Κούρας <nikos.gr33k@gmail.com> - 2013-06-10 07:27 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) jmfauth <wxjmfauth@gmail.com> - 2013-06-10 12:48 -0700
                Re: Changing filenames from Greeklish => Greek (subprocess complain) Ned Batchelder <ned@nedbatchelder.com> - 2013-06-10 13:28 -0700

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