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I am trying to get information from a QGIS project and layers and produce a new project based on new analysis results made on FME.

How to install the PyQGIS module and then using the custom python interpreter in FME Desktop?

I am using QGIS-ltr 2.18.23 (from OSGEO4w64) and FME 2018.1.0.1 (Win64). And the python/QGIS related paths into PATH environmental variable are: C:\OSGeo4W64\apps\qgis-ltr\bin; C:\OSGeo4W64\apps\Python27; C:\OSGeo4W64\bin

In FME desktop I am reading the C:\OSGeo4W64\bin\python27.dll as the preferred Python interpreter and PYHTONHOME path is: C:\OSGeo4W64\apps\qgis-ltr\python

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I believe QGIS uses/installs Python 2.7, so that's OK. FME is compatible with both 2.7 and 3 for now (although 2.7 is being phased out).

Under Tools > FME Options > Translation set the Python interpreter to the QGIS DLL and set the Python home folder. I believe the QGIS Python dll can be found under QGIS\bin\python27.dll and the home folder is QGIS\apps\Python27

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You can also set PYTHONHOME as an environment variable too. You'll also need to make sure that qgis_core.dll is included in your PATH setting as well.

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  • I am not using those paths as i am using the osgeo4w64 install. I edited the question to give you more details on pyhtonhome and path environmental variable regarding qgis/python. So using another paths for reaching QGIS python, i am actually reaching the python27.dll interpreter and keeping qgis_core.dll in the path environmental variable. And unfortnutately, it does not work. Have you tried to load any python module from QGIS using python caller? does it work?
    – Antonio Armas Díaz
    Sep 18, 2018 at 8:32

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