diff --git a/src/Model/Pollutants/Pollutants.py b/src/Model/Pollutants/Pollutants.py
index 4faea270..ba5c3ac7 100644
--- a/src/Model/Pollutants/Pollutants.py
+++ b/src/Model/Pollutants/Pollutants.py
@@ -320,7 +320,8 @@ class Pollutants(SQLSubModel):
                                                bc=float(data[8]),
                                                pollutant=self,
                                                status=self._status
-                                              )]
+                                               )
+                      ]
 
     @classmethod
     def _db_create(cls, execute, ext=""):
diff --git a/src/Solver/RubarBE.py b/src/Solver/RubarBE.py
index 36b36a48..a20eb0ac 100644
--- a/src/Solver/RubarBE.py
+++ b/src/Solver/RubarBE.py
@@ -170,7 +170,7 @@ class Rubar3(CommandLineSolver):
             it = iter(params)
 
             param = next(it, None)
-            while param != None:
+            while param is not None:
                 name = param.name
                 value = param.value
 
diff --git a/src/View/Translate.py b/src/View/Translate.py
index 6fc20c46..8cddb4c0 100644
--- a/src/View/Translate.py
+++ b/src/View/Translate.py
@@ -266,7 +266,6 @@ class MainTranslate(UnitTranslate):
             "incompatible study version"
         )
 
-
         self._dict["mb_unsaved_study_title"] = _translate(
             "MainWindow", "Open scenarios window"
         )