[GRASS-dev] Python scripts in GRASS GIS: conditional loading of external libraries?
nik at nikosalexandris.net
Fri Oct 19 09:24:38 PDT 2018
* Markus Neteler <neteler at osgeo.org> [2018-10-19 16:45:29 +0200]:
>we are currently writing a Python script which needs to import some
>heavy external libraries.
>AFAIK the script is read twice, once by the Python interpreter, then
>when having reached the grass.parser() line again in order to re-read
>#% options ...
>Now: could the import of the external library (it takes in the range
>of > 2min) be conditionalized to only be read at the second "run"?
>I was searching in the g.parser code but didn't really find anything useful.
>An example would also be fine (addon?).
>Or am I on the wrong track?
An idea is to try make use of `importlib.import_module()` along with
if 'xyz' not in sys.modules:
or better (?):
if 'xyz' not in sys.modules and 'xyz' not in dir():
Although this is a valid test, according to some answers over at
StackExchange, I still miss something to make it work.
In ipython, the import works, but I am not able to access interactively
'xyz.' methods though.
Note to self: understand why.
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