[QGIS-Developer] Plugin using Pythonnet fails to start during installation

[Benjamin Jakimow]

Dear Lars,

this looks like your plugin's __init__.py (that one that contains the 
"def classFactory(iface)") want's to import the LIFA_ejdexplorer before 
it's location is added to the PYTHONPATH

You may need something like:

sys.path.append('folder to LIFA_ejdexplorer')

before the classFactory(iface) is called.

Greetings,
Benjamin


On 09/04/2024 10:49, Lars I. Nielsen via QGIS-Developer wrote:
> Hi developers.
> 
> We’ve developed a QGIS plugin, that utilizes Pythonnet to communicate 
> with C# on Windows.
> 
> Pythonnet is not part of the chosen distribution for Python in QGIS (as 
> of 3.34), so we do a separate installation of this module into 
> %APPDATA%/Python, which is used by all Python distributions on the PC.
> 
> But even after Pythonnet has been installed correctly, we get an error 
> when the QGIS plugin installer tries to start the plugin.
> 
> However, the plugin has been installed correctly, and it starts just 
> fine when one manually activates it in the plugin window list.
> 
> Why can’t the plugin start when activated by the QGIS plugin installer ?
> 
> Is it running in some kind of restricted environment, that excludes use 
> of the APPDATA location ?
> 
> Cheers.
> 
> Ps!
> 
> We are aware of different versions of Pythonnet in Python 3.7 vs 3.9. We 
> install both.
> 
> Med venlig hilsen
> 
> *Lars I. Nielsen*
> 
> GIS-kons., FME+Python Certified Professional
> 
> GeoData
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> Dir.
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> +4563136849 <tel:+4563136849>
> 
> Tlf.
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> Mail
> 
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> +lin at lifa.dk <mailto:lin at lifa.dk>
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-- 
Dr. Benjamin Jakimow
Earth Observation Lab | Geography Department | Humboldt-Universität zu 
Berlin

e-mail: benjamin.jakimow at geo.hu-berlin.de

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