PEP 271 – Prefixing sys.path by command line option¶
- PEP
271
- Title
Prefixing sys.path by command line option
- Version
$Revision$
- Last-Modified
- Author
fred at arakne.com (Frédéric B. Giacometti)
- Status
Rejected
- Type
Standards Track
- Content-Type
- Created
15-Aug-2001
- Python-Version
2.2
- Post-History
Contents
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