Fix calls to set_domain

Author: janezd

Orange/widgets/data/owcorrelations.py

@@ -376,7 +376,8 @@ def set_data(self, data):
         self.vizrank.button.setEnabled(self.cont_data is not None)
 
     def set_feature_model(self):
-        self.feature_model.set_domain(self.cont_data and self.cont_data.domain)
+        self.feature_model.set_domain(
+            self.cont_data.domain if self.cont_data else None)
         data = self.data
         if self.cont_data and data.domain.has_continuous_class:
             self.feature = self.cont_data.domain[data.domain.class_var.name]

Orange/widgets/data/owcreateclass.py

@@ -301,7 +301,7 @@ def set_data(self, data):
         details = format_summary_details(data) if data else ""
         self.info.set_input_summary(summary, details)
         model = self.controls.attribute.model()
-        model.set_domain(data and data.domain)
+        model.set_domain(data.domain if data else None)
         self.Warning.no_nonnumeric_vars(shown=data is not None and not model)
         if not model:
             self.attribute = None

Orange/widgets/data/owmergedata.py

@@ -352,13 +352,13 @@ def change_merging(self):
     @check_sql_input
     def set_data(self, data):
         self.data = data
-        self.model.set_domain(data and data.domain)
+        self.model.set_domain(data.domain if data else None)
 
     @Inputs.extra_data
     @check_sql_input
     def set_extra_data(self, data):
         self.extra_data = data
-        self.extra_model.set_domain(data and data.domain)
+        self.extra_model.set_domain(data.domain if data else None)
 
     def store_combo_state(self):
         self.attr_pairs = self.attr_boxes.current_state()

Orange/widgets/data/owtranspose.py

@@ -102,7 +102,7 @@ def set_data(self, data):
         self.unconditional_apply()
 
     def set_controls(self):
-        self.feature_model.set_domain(self.data and self.data.domain)
+        self.feature_model.set_domain(self.data.domain if self.data else None)
         self.meta_button.setEnabled(bool(self.feature_model))
         if self.feature_model:
             self.feature_names_column = self.feature_model[0]