This is a duplicate of Launching Processing tool User Interface using PyQGIS. However, the answer provided is not correct for QGIS 3.4.1.

from processing.gui.CommanderWindow import CommanderWindow

results in a

ModuleNotFoundError: No module named 'processing.gui.CommanderWindow'

Anyone know the current syntax to launch a processing tool from pyqgis, so that I can call one from e.g. a plugin?

1 Answer 1


In qgis 3 this is:

 results = processing.execAlgorithmDialog('algorithm_id', initial_params)

The initial parameters argument can be used to specify the initial values to populate the dialog with.


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