Is it possible to impose with pyqgis3.0 some constraints on a drop list of a field attribute in order to govern the drop list attributes of another linked field? To better clarify this issue, I attach the following schema: When I select the Attribute 1.1 of the field 1, then the drop list of the field 2 should be limited to: Attribute 1.2, Attribute 2.2, Attribute 3.2. Ect. enter image description here

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