setting PYTHONPATH to override system wide site-packages

[per]

On Feb 28, 11:53 pm, per <perfr... at gmail.com> wrote:
> On Feb 28, 11:24 pm, Carl Banks <pavlovevide... at gmail.com> wrote:
>
>
>
> > On Feb 28, 7:30 pm, per <perfr... at gmail.com> wrote:
>
> > > hi all,
>
> > > i recently installed a new version of a package using python setup.py
> > > install --prefix=/my/homedir on a system where i don't have root
> > > access. the old package still resides in /usr/lib/python2.5/site-
> > > packages/ and i cannot erase it.
>
> > > i set my python path as follows in ~/.cshrc
>
> > > setenv PYTHONPATH /path/to/newpackage
>
> > > but whenever i go to python and import the module, the version in site-
> > > packages is loaded. how can i override this setting and make it so
> > > python loads the version of the package that's in my home dir?
>
> > What happens when you run the command "print sys.path" from the Python
> > prompt?  /path/to/newpackage should be the second item, and shoud be
> > listed in front of the site-packages dir.
>
> > What happens when you run "print os.eviron['PYTHONPATH']" at the
> > Python interpreter?  It's possible that the sysadmin installed a
> > script that removes PYTHONPATH environment variable before invoking
> > Python.  What happens when you type "which python" at the csh prompt?
>
> > What happens when you type "ls /path/to/newpackage" at your csh
> > prompt?  Is the module you're trying to import there?
>
> > You approach should work.  These are just suggestions on how to
> > diagnose the problem; we can't really help you figure out what's wrong
> > without more information.
>
> > Carl Banks
>
> hi,
>
> i am setting it programmatically now, using:
>
> import sys
> sys.path = [....]
>
> sys.path now looks exactly like what it looked like before, except the
> second element is my directory. yet when i do
>
> import mymodule
> print mymodule.__version__
>
> i still get the old version...
>
> any other ideas?

in case it helps, it gives me this warning when i try to import the
module

/usr/lib64/python2.5/site-packages/pytz/__init__.py:29: UserWarning:
Module dateutil was already imported from /usr/lib64/python2.5/site-
packages/dateutil/__init__.pyc, but /usr/lib/python2.5/site-packages
is being added to sys.path
  from pkg_resources import resource_stream