Encoding for Code Page 273 used by EBCDIC Germany Austria

[mbieren]

BPO	1097797
Nosy	@malemburg, @akuchling, @pitrou, @devdanzin, @bitdancer
Files	CP273.TXT

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2013-11-10.18:49:16.914>
created_at = <Date 2005-01-07.11:44:53.000>
labels = ['type-feature', 'library']
title = 'Encoding for Code Page 273 used by EBCDIC Germany Austria'
updated_at = <Date 2014-03-08.02:04:20.040>
user = 'https://bugs.python.org/mbieren'

bugs.python.org fields:

activity = <Date 2014-03-08.02:04:20.040>
actor = 'r.david.murray'
assignee = 'none'
closed = True
closed_date = <Date 2013-11-10.18:49:16.914>
closer = 'akuchling'
components = ['Library (Lib)']
creation = <Date 2005-01-07.11:44:53.000>
creator = 'mbieren'
dependencies = []
files = ['6420']
hgrepos = []
issue_num = 1097797
keywords = ['patch']
message_count = 18.0
messages = ['47493', '47494', '47495', '47496', '47497', '47498', '82127', '82138', '82232', '82235', '99843', '99848', '114990', '202546', '202547', '202548', '202600', '212919']
nosy_count = 8.0
nosy_names = ['lemburg', 'akuchling', 'pitrou', 'ajaksu2', 'mbieren', 'r.david.murray', 'BreamoreBoy', 'python-dev']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue1097797'
versions = ['Python 3.2']

[mbieren]

CP273.TXT to be used with gencodec.py. Enables
Communication with "old" IBM Mainframes

[malemburg]

Logged In: YES
user_id=38388

Can you provide a reference of where and how this encoding
is used ?

We also need information of where the attached file originated.

Thanks.

[mbieren]

Logged In: YES
user_id=1074928

The encoding is used on IBM Mainframes here in Germany
and Austria. Mostly on "old" VM/VSE Machines. Rawdata is
transferred via MQSeries and then encoded from "cp273" to
"latin_1".

The file has been translated from the original IBM RFC by
myself.

www.unicode.org has no equivalent file on their FTP-Servers
(ftp://ftp.unicode.org/Public/MAPPINGS/).

CP273 is an alias for this charset. source: IBM NLS RM Vol2
SE09-8002-01, March 1990

Regards

Michael

[akuchling]

Given that the patch author has provided further details, can this patch be accepted now?

[malemburg]

I guess so.

Note that it's not a patch, but the template to be used with gencodec.py.

[mbieren]

Yes the patch can be included. The file should be used by gencodec.py

[devdanzin]

Looks like it was never included. I guess '"old" IBM Mainframes' is a
dwindling user base, should this one be closed?

[pitrou]

A Google search for "cp273 encoding" reveals that at least one other
person needed it:
http://www.stroeder.com/pylib/encodings/cp273.py

[mbieren]

"Old IBM Mainframes" are widely used in the financial industry. It
would be good if the patch is included

[malemburg]

Like I said a few years: this can go in. Python is used a lot in the
financial industry.

The code page is referenced in this RFC:

http://rfc.dotsrc.org/rfc/rfc1345.html

This page has a good comparison of the various IBM code pages as shipped
with different tools (jdk, glibc, aix, etc.):

http://www.haible.de/bruno/charsets/conversion-tables/RFC1345-IBM.html

[akuchling]

I tried figuring out to rebuild the codecs using the scripts in Tools/unicode/ but failed. Is the use of that directory documented anywhere?

[malemburg]

A.M. Kuchling wrote:

A.M. Kuchling <lists@amk.ca> added the comment:

I tried figuring out to rebuild the codecs using the scripts in Tools/unicode/ but failed. Is the use of that directory documented anywhere?

See the Makefile in that directory - that's what I use to build the
codecs.

If you just want to create a single codec, have a look at the
gencodec.py module doc-string.

[BreamoreBoy]

The consensus is that this should have gone into Python years ago.

[python-dev]

New changeset 7d9d1bcd7d18 by Andrew Kuchling in branch 'default':
bpo-1097797: Add CP273 codec, and exercise it in the test suite
http://hg.python.org/cpython/rev/7d9d1bcd7d18

[python-dev]

New changeset fa2581bbef44 by Andrew Kuchling in branch 'default':
Add news entry for bpo-1097797; whitespace cleanup
http://hg.python.org/cpython/rev/fa2581bbef44

[akuchling]

Committed this to 3.4.

[python-dev]

New changeset 93645b0b6750 by Andrew Kuchling in branch 'default':
bpo-1097797: add the original mapping file
http://hg.python.org/cpython/rev/93645b0b6750

[bitdancer]

In changeset d843a1caba78 (I screwed up the issue number in the commit), I added aliases according to http://lists.w3.org/Archives/Public/ietf-charsets/2002JulSep/0153.html plus what appears to be the conventional alias of just the number, and added it to the codecs docs, making a wild guess based on the issue title that the Language is German.