[GRASS-dev] using libpath + ":" + in grass70 unsupported operand type

[Vaclav Petras]

On Mon, Nov 25, 2013 at 10:55 AM, Yann Chemin <ychemin at gmail.com> wrote:

> Hi,
>
> ~/grass_dev$ grass70
> Traceback (most recent call last):
>   File "/usr/local/bin/grass70", line 1267, in <module>
>     load_env()
>   File "/usr/local/bin/grass70", line 753, in load_env
>     os.environ['LD_LIBRARY_PATH'] = libpath + ":" + isislibpath + ":" +
> isis3rdparty
> TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'
>
> : is certainly not considered a string, but I cannot force it to be string
> either... Any idea?
>
>
Hi Yann,

I'm not sure if I understand your situation, anyway:

My line 753 in lib/init/grass.py says:

  ... libpath + os.pathsep + isislibpath + os.pathsep + isis3rdparty

os.pathsep is for sure type str as well as ":" literal is type str.

I would say that one of libpath, isislibpath and isis3rdparty is None
although lines above seems that they sets everything.

Can you debug your code? Simple print before line 753 should be enough:

  print libpath, isislibpath, isis3rdparty

As far as I know, the print will not break the start up, so it should work.

Vaclav

Thanks
>
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