Permanently adding to the Python path in Ubuntu

Chris Colbert sccolbert at gmail.com
Sun Aug 30 18:07:58 CEST 2009


I don't want to have to modify the path in each and every application.

There has to be a way to do this...

Personally, I don't agree with the Debian maintainers in the order
they import anyway; it should be simple for me to overshadow system
packagers. But that's another story.

P.S. my first name is Steven!

Cheers,

Chris

On Sat, Aug 29, 2009 at 11:51 PM, Sean DiZazzo<half.italian at gmail.com> wrote:
> On Aug 29, 5:39 pm, Chris Colbert <sccolb... at gmail.com> wrote:
>> I'm having an issue with sys.path on Ubuntu. I want some of my home
>> built packages to overshadow the system packages. Namely, I have built
>> numpy 1.3.0 from source with atlas support, and I need it to
>> overshadow the system numpy 1.2.1 which I had to drag along as a
>> dependency for other stuff. I have numpy 1.3.0 installed into
>> /usr/local/lib/python2.6/dist-packages/. The issue is that this
>> directory is added to the path after the
>> /usr/lib/python2.6/dist-packages/ is added, so python doesnt see my
>> version of numpy.
>>
>> I have been combating this with a line in my .bashrc file:
>>
>> export PYTHONPATH=/usr/local/lib/python2.6/dist-packages
>>
>> So when I start python from the shell, everything works fine.
>>
>> Problems show up when python is not executed from the shell, and thus
>> the path variable is never exported. This can occur when I have
>> launcher in the gnome panel or i'm executing from within wing-ide.
>>
>> Is there a way to fix this so that the local dist-packages is added to
>> sys.path before the system directory ALWAYS? I can do this by editing
>> site.py but I think it's kind of bad form to do it this way. I feel
>> there has to be a way to do this without root privileges.
>>
>> Any ideas?
>>
>> Cheers,
>>
>> Chris
>
> I think you can modify sys.path inside your application.
>
> Maybe this will work (at the top of your script):
>
>
> import sys
> sys.path[0] = "/usr/local/lib/python2.6/dist-packages"
>
> import numpy
>
>
> PS.  Say hi to Steven for me!
>
> ~Sean
> --
> http://mail.python.org/mailman/listinfo/python-list
>



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