diff --git a/dibbler/lib/statistikkHelpers.py b/dibbler/lib/statistikkHelpers.py
index 80ea886..0441aec 100644
--- a/dibbler/lib/statistikkHelpers.py
+++ b/dibbler/lib/statistikkHelpers.py
@@ -76,12 +76,8 @@ class Database:
     personDatoVerdi = defaultdict(list)  # dict->array
     personUkedagVerdi = defaultdict(list)
     # for global
-    personPosTransactions = (
-        {}
-    )  # personPosTransactions[trygvrad] == 100 #trygvrad har lagt 100kr i boksen
-    personNegTransactions = (
-        {}
-    )  # personNegTransactions[trygvrad» == 70 #trygvrad har tatt 70kr fra boksen
+    personPosTransactions = {}  # personPosTransactions[trygvrad] == 100 #trygvrad har lagt 100kr i boksen
+    personNegTransactions = {}  # personNegTransactions[trygvrad» == 70 #trygvrad har tatt 70kr fra boksen
     globalVareAntall = {}  # globalVareAntall[Oreo] == 3
     globalVareVerdi = {}  # globalVareVerdi[Oreo] == 30 #[kr]
     globalPersonAntall = {}  # globalPersonAntall[trygvrad] == 3
diff --git a/dibbler/main.py b/dibbler/main.py
index c9af841..f7c459f 100644
--- a/dibbler/main.py
+++ b/dibbler/main.py
@@ -20,7 +20,7 @@ subparsers = parser.add_subparsers(
 subparsers.add_parser("loop", help="Run the dibbler loop")
 subparsers.add_parser("create-db", help="Create the database")
 subparsers.add_parser("slabbedasker", help="Find out who is slabbedasker")
-subparsers.add_parser("seed-data",help="Fill with mock data")
+subparsers.add_parser("seed-data", help="Fill with mock data")
 
 
 def main():
@@ -41,13 +41,12 @@ def main():
         import dibbler.subcommands.slabbedasker as slabbedasker
 
         slabbedasker.main()
-    
+
     elif args.subcommand == "seed-data":
         import dibbler.subcommands.seed_test_data as seed_test_data
 
         seed_test_data.main()
 
 
-
 if __name__ == "__main__":
     main()
diff --git a/dibbler/menus/buymenu.py b/dibbler/menus/buymenu.py
index acb534e..05be7f9 100644
--- a/dibbler/menus/buymenu.py
+++ b/dibbler/menus/buymenu.py
@@ -180,7 +180,7 @@ When finished, write an empty line to confirm the purchase.\n"""
                     print(f"User {t.user.name}'s credit is now {t.user.credit:d} kr")
                     if t.user.credit < config.getint("limits", "low_credit_warning_limit"):
                         print(
-                            f'USER {t.user.name} HAS LOWER CREDIT THAN {config.getint("limits", "low_credit_warning_limit"):d},',
+                            f"USER {t.user.name} HAS LOWER CREDIT THAN {config.getint('limits', 'low_credit_warning_limit'):d},",
                             "AND SHOULD CONSIDER PUTTING SOME MONEY IN THE BOX.",
                         )
 
diff --git a/dibbler/models/__init__.py b/dibbler/models/__init__.py
index 20999e9..9cd0325 100644
--- a/dibbler/models/__init__.py
+++ b/dibbler/models/__init__.py
@@ -1,11 +1,11 @@
 __all__ = [
-    'Base',
-    'Product',
-    'Purchase',
-    'PurchaseEntry',
-    'Transaction',
-    'User',
-    'UserProducts',
+    "Base",
+    "Product",
+    "Purchase",
+    "PurchaseEntry",
+    "Transaction",
+    "User",
+    "UserProducts",
 ]
 
 from .Base import Base
diff --git a/dibbler/subcommands/seed_test_data.py b/dibbler/subcommands/seed_test_data.py
index 8c1b2f3..07454ea 100644
--- a/dibbler/subcommands/seed_test_data.py
+++ b/dibbler/subcommands/seed_test_data.py
@@ -5,9 +5,9 @@ from pathlib import Path
 
 from dibbler.models.Product import Product
 
-from dibbler.models.User import User 
+from dibbler.models.User import User
 
-JSON_FILE = Path(__file__).parent.parent.parent/"mock_data.json"
+JSON_FILE = Path(__file__).parent.parent.parent / "mock_data.json"
 
 
 def clear_db(session):
@@ -16,7 +16,7 @@ def clear_db(session):
     session.commit()
 
 
-def main() :
+def main():
     session = Session()
     clear_db(session)
     product_items = []
@@ -26,11 +26,21 @@ def main() :
         json_obj = json.load(f)
 
         for product in json_obj["products"]:
-            product_item = Product(bar_code=product["bar_code"], name=product["name"], price=product["price"], stock=product["stock"])
+            product_item = Product(
+                bar_code=product["bar_code"],
+                name=product["name"],
+                price=product["price"],
+                stock=product["stock"],
+            )
             product_items.append(product_item)
 
         for user in json_obj["users"]:
-            user_item = User(name=user ["name"], card=user [ "card" ], rfid=user [ "rfid" ], credit=user ["credit"]) 
+            user_item = User(
+                name=user["name"],
+                card=user["card"],
+                rfid=user["rfid"],
+                credit=user["credit"],
+            )
             user_items.append(user_item)
 
         session.add_all(product_items)