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Top Forums UNIX for Dummies Questions & Answers Python... Post 302821897 by bakunin on Sunday 16th of June 2013 03:14:38 AM
Old 06-16-2013
Quote:
Originally Posted by wisecracker
1) Is the Python language now considered a part of the *NIX transient command structure much like Perl, (and awk)?
This question sounds like "are cars usually red"? There are without a doubt a lot of red cars, but this means nothing if you what to know if this specific car is red or not. What you are interested in is, if the software is installed on the specific system you want to run some script on. If some other systems have it or not doesn't matter.

What "UNIX" constitutes is defined in the "Single Unix Specification", the "POSIX" specification and similar documents. Today a UNIX system is not required to use some specific (AT&T-) code, but to react in a (thusly) specified way. "awk" is part of this specification, "perl" is not. And neither is "python". If you want to write portable scripts you should consider using the POSIX shell (which resembles mostly the ksh88).

Quote:
Originally Posted by wisecracker
2) If so which OSes now have it as part of a "default" install - NOT an extra to be downloaded from repositories at a later date.
The system i use most - AIX - definitely doesn't have it in the default install and for AIX - as well as any other systems i use - the term "default install" is meaningless. When i install a production system i use a carefully crafted absolute-minimum-image ("golden image") and install of this what is needed. What can be expected because of the POSIX specification is there (all tools listed as "mandatory"), but not more. Everything installed will have to be maintained, can break, etc. and if you have thousands of systems in a data center (quite the common case) you want to keep the things which can break at an absolute minimum.

I hope this helps.

bakunin
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DH_PYSUPPORT(1) 						  python-support						   DH_PYSUPPORT(1)

NAME
dh_pysupport - use the python-support framework to handle Python modules SYNOPSIS
dh_pysupport [debhelper options] [-V X.Y] [-X item [...]] [-n] [module dirs ...] DESCRIPTION
dh_pysupport is a debhelper program that will scan your package, detect public modules in /usr/lib/pythonX.Y/site-packages, and move them to the shared Python modules location. It will generate appropriate postinst/prerm scripts to byte-compile modules installed there for all available python versions. It will also look for private Python modules and will byte-compile them with the current Python version. You may have to list the directories containing private Python modules. If a file named debian/pyversions exists, it is used to determine the python versions with which the package can work. Appropriate dependencies on python-support, python and pythonX.Y are put in ${python:Depends}. The ${python:Versions} and ${python:Provides} optional substitution variables are made available as well. OPTIONS
module dirs If your package installs private python modules in non-standard directories, you can make dh_pysupport check those directories by passing their names on the command line. By default, it will check /usr/lib/$PACKAGE, /usr/share/$PACKAGE, /usr/lib/games/$PACKAGE and /usr/share/games/$PACKAGE -n, --noscripts Do not modify postinst/postrm scripts. -d This option is deprecated. -V X.Y Force private modules to be bytecompiled with the specific X.Y python version, regardless of the default python version on the system. -X item, --exclude=item Exclude files that contain "item" anywhere in their filename from being taken into account to generate the python dependency. It also excludes them from byte-compilation. You may use this option multiple times to build up a list of things to exclude. CONFORMS TO
Python policy as of 2006-08-10 SEE ALSO
debhelper(7) This program is a part of python-support but is made to work with debhelper. AUTHORS
Josselin Mouette <joss@debian.org>, Raphael Hertzog <hertzog@debian.org> 1.0.15 2012-06-30 DH_PYSUPPORT(1)
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