[Qgis-developer] Processing scripts in stand-alone Python scripts

[Anita Graser]

HI Victor,

On Thu, Nov 26, 2015 at 1:12 PM, Victor Olaya <volayaf at gmail.com> wrote:

> does Processing.getAlgorithm("script:helloworld") work in a normal
> QGIS Python console?
>

​Yes it does​.

Just in case, the name of the script is the name of the file (without
> the extension)
>
> Maybe you can try
> ​​
> Processing.alghelp("script") to get the name of
> available algorithms from the script provider
>

​Is alghelp() really correct? Even in the Python console, I only get errors

processing.alghelp("scripts")
Algorithm not found
Processing.alghelp("script")
Traceback (most recent call last):
  File "<input>", line 1, in <module>
AttributeError: class Processing has no attribute 'alghelp'​

​Best wishes,
Anita​





>
> Hope this helps
>
>
>
> 2015-11-26 11:06 GMT+01:00 Anita Graser <anitagraser at gmx.at>:
> > Hi,
> >
> > I'm trying to run Processing scripts in a stand-alone Python script. The
> > examples available online for calling default, e.g. QGIS algorithms, work
> > fine but when I try to access a script instead, it cannot be found, i.e.
> > getAlgorithm() returns None.
> >
> > Am I missing something or is this a bug?
> >
> > # Prepare the environment
> > import sys
> > from qgis.core import QgsApplication
> > from PyQt4.QtGui import QApplication
> > app = QApplication([])
> > QgsApplication.setPrefixPath("/usr", True)
> > QgsApplication.initQgis()
> >
> > # Prepare processing framework
> > sys.path.append('/home/agraser/.qgis2/python/plugins')
> > from processing.core.Processing import Processing
> > Processing.initialize()
> >
> > print Processing.getAlgorithm("qgis:creategrid") # works
> > print Processing.getAlgorithm("script:helloworld") # doesn't work
> >
> > # Exit applications
> > QgsApplication.exitQgis()
> > QApplication.exit()
> >
> >
> > Thanks and best wishes,
> > Anita
> >
> >
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