diff --git a/src/Model/Scenario.py b/src/Model/Scenario.py
index 95c571fd..1f06f333 100644
--- a/src/Model/Scenario.py
+++ b/src/Model/Scenario.py
@@ -20,6 +20,7 @@ from tools import logger_exception
 
 from Model.Tools.PamhyrDB import SQLSubModel
 
+
 class Scenario(SQLSubModel):
     _id_cnt = 0
     _sub_classes = []
@@ -28,7 +29,7 @@ class Scenario(SQLSubModel):
                  id: int = -1,
                  name: str = "",
                  description: str = "",
-                 revision:int = 0,
+                 revision: int = 0,
                  parent=None,
                  status=None):
         super(Scenario, self).__init__()
@@ -148,7 +149,7 @@ class Scenario(SQLSubModel):
             "INSERT OR REPLACE INTO " +
             "scenario(id, name, description, revision, parent_id) " +
             "VALUES (" +
-            f"{self._id}, "+
+            f"{self._id}, " +
             f"'{self._db_format(self.name)}', " +
             f"'{self._db_format(self.description)}', " +
             f"{self._revision}, " +
diff --git a/src/Model/Scenarios.py b/src/Model/Scenarios.py
index a390f114..6b39c59e 100644
--- a/src/Model/Scenarios.py
+++ b/src/Model/Scenarios.py
@@ -21,6 +21,7 @@ from tools import logger_exception
 from Model.Tools.PamhyrDict import PamhyrModelDict
 from Model.Scenario import Scenario
 
+
 class Scenarios(PamhyrModelDict):
     _sub_classes = [
         Scenario,
diff --git a/src/Model/Study.py b/src/Model/Study.py
index 14168af0..963d2043 100644
--- a/src/Model/Study.py
+++ b/src/Model/Study.py
@@ -316,11 +316,11 @@ class Study(SQLModel):
         )
 
         data = {"status": new.status}
-        sql_exec = lambda sql: new.execute(
-            sql,
-            fetch_one=False,
-            commit=True
-        )
+
+        def sql_exec(sql):
+            return new.execute(
+                sql, fetch_one=False, commit=True
+            )
 
         new.scenarios = Scenarios._db_load(
             sql_exec,
diff --git a/src/Model/Tools/PamhyrID.py b/src/Model/Tools/PamhyrID.py
index 4cffab93..0527329a 100644
--- a/src/Model/Tools/PamhyrID.py
+++ b/src/Model/Tools/PamhyrID.py
@@ -18,6 +18,7 @@
 
 from tools import trace, timer
 
+
 class PamhyrID(object):
     _pamhyr_id_cnt = 0