558f030de16f0e3ea4ce860aac0d085faad99441,ilastik/applets/batchProcessing/batchProcessingGui.py,BatchProcessingGui,run_export,#BatchProcessingGui#,153

Before Change

        role_names = self.parentApplet.dataSelectionApplet.topLevelOperator.DatasetRoles.value

        // Prepare file lists in an OrderedDict
        role_path_dict = OrderedDict()
        role_path_dict[0] = BatchProcessingGui.get_all_item_strings(self.list_widgets[0])
        num_datasets = len(role_path_dict[0])

        for role_index, list_widget in enumerate(self.list_widgets[1:], start=1):
            role_path_dict[role_index] = BatchProcessingGui.get_all_item_strings(self.list_widgets[role_index])
            assert len(role_path_dict[role_index]) <= num_datasets, \
                "Too many files given for role: "{}"".format( role_names[role_index] )
            if len(role_path_dict[role_index]) < num_datasets:
                role_path_dict[role_index] += [None] * (num_datasets-len(role_path_dict[role_index]))

        // Run the export in a separate thread
        export_req = Request(partial(self.parentApplet.run_export, role_path_dict))
        export_req.notify_failed(self.handle_batch_processing_failure)
        export_req.notify_finished(self.handle_batch_processing_finished)
        export_req.notify_cancelled(self.handle_batch_processing_cancelled)

After Change

        role_names = self.parentApplet.dataSelectionApplet.topLevelOperator.DatasetRoles.value

        // Prepare file lists in an OrderedDict
        role_path_dict = OrderedDict(
            (role_name, self._data_role_widgets[role_name].get_all_item_strings())
            for role_name
            in role_names
        )
        dominant_role_name = role_names[0]
        num_datasets = len(role_path_dict[dominant_role_name])

        for role_name in role_names[1:]:

Instances