Importing different versions of a module
fredrik at pythonware.com
Mon Jul 21 23:55:41 CEST 2008
mercado mercado wrote:
> I have two versions of a script on my machine. One version is for new
> development and the other version is a production version. This script
> imports a module from a different directory, and this module again has
> two versions (a development version and a production version). What I
> want is for the development script to import the development module, and
> the production script to import the production module, without making
> any changes to the code in the script.
if you already have two different versions of the script, what stops you
from making changes to them?
> For example, suppose the development script is in ~/dev/rss.py, and the
> production script is in ~/prod/rss.py. I want the dev version to import
> /usr/lib/python2.5/site-packages/lib_dev/parse.py, and the prod version
> to import usr/lib/python2.5/site-packages/lib_prod/parse.py.
cannot you just insert the appropriate directory in sys.path the first
thing you do in the scripts? e.g.
import os, sys
lib = "lib_dev" # change this for prod/rss.py
os.path.dirname(os.__file__), "site-packages", lib
import parse # picks the right one
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