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peps/pep-0271.txt

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PEP: 271
Title: Prefixing sys.path by command line option
Author: Frédéric B. Giacometti <fred@arakne.com>
Status: Rejected
Type: Standards Track
Content-Type: text/x-rst
Created: 15-Aug-2001
Python-Version: 2.2
Post-History:
Abstract
========
At present, setting the ``PYTHONPATH`` environment variable is the
only method for defining additional Python module search
directories.
This PEP introduces the '-P' valued option to the python command
as an alternative to ``PYTHONPATH``.
Rationale
=========
On Unix::
python -P $SOMEVALUE
will be equivalent to::
env PYTHONPATH=$SOMEVALUE python
On Windows 2K::
python -P %SOMEVALUE%
will (almost) be equivalent to::
set __PYTHONPATH=%PYTHONPATH% && set PYTHONPATH=%SOMEVALUE%\
&& python && set PYTHONPATH=%__PYTHONPATH%
Other Information
=================
This option is equivalent to the 'java -classpath' option.
When to use this option
=======================
This option is intended to ease and make more robust the use of
Python in test or build scripts, for instance.
Reference Implementation
========================
A patch implementing this is available from SourceForge::
http://sourceforge.net/tracker/download.php?group_id=5470&atid=305470&file_id=6916&aid=429614
with the patch discussion at::
http://sourceforge.net/tracker/?func=detail&atid=305470&aid=429614&group_id=5470
Copyright
=========
This document has been placed in the public domain.