Source

python-peps / pep-0271.txt

PEP: 271
Title: Prefixing sys.path by command line option
Version: $Revision$
Last-Modified: $Date$
Author: fred@arakne.com (Frédéric B. Giacometti) 
Status: Rejected
Type: Standards Track
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.



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