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

[Glynn Clements]

Yann Chemin wrote:

> ~/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?

The problem is that one of the variables (libpath, isislibpath,
isis3rdparty) is None, and "None + str" isn't defined:

	> None + "hello"
	Traceback (most recent call last):
	  File "<stdin>", line 1, in <module>
	TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

-- 
Glynn Clements <glynn at gclements.plus.com>