diff --git a/common/utils.py b/common/utils.py
index f837ec0..ed82eb6 100644
--- a/common/utils.py
+++ b/common/utils.py
@@ -7,7 +7,8 @@ def safe_division(numerator: int | float, denominator: int | float) -> int | flo
         return numerator / denominator
     except ZeroDivisionError:
         return 0
-    
+
+
 def safe_getattr(obj, attr_chain, default=None):
     """
     Safely get the nested attribute from an object.
@@ -20,7 +21,7 @@ def safe_getattr(obj, attr_chain, default=None):
     Returns:
     The value of the nested attribute if it exists, otherwise the default value.
     """
-    attrs = attr_chain.split('.')
+    attrs = attr_chain.split(".")
     for attr in attrs:
         try:
             obj = getattr(obj, attr)
diff --git a/games/forms.py b/games/forms.py
index 6ad8b19..1104d54 100644
--- a/games/forms.py
+++ b/games/forms.py
@@ -46,7 +46,7 @@ class EditionChoiceField(forms.ModelChoiceField):
 class IncludePlatformSelect(forms.Select):
     def create_option(self, name, value, *args, **kwargs):
         option = super().create_option(name, value, *args, **kwargs)
-        if platform_id := safe_getattr(value, 'instance.platform.id'):
+        if platform_id := safe_getattr(value, "instance.platform.id"):
             option["attrs"]["data-platform"] = platform_id
         return option
 
diff --git a/games/views.py b/games/views.py
index 192beab..8a3250c 100644
--- a/games/views.py
+++ b/games/views.py
@@ -283,6 +283,7 @@ def end_session(request, session_id: int, template: str = ""):
         return render(request, template, context)
     return redirect("list_sessions")
 
+
 @login_required
 def delete_session(request, session_id=None):
     session = get_object_or_404(Session, id=session_id)
@@ -591,12 +592,14 @@ def stats(request, year: int = 0):
     request.session["return_path"] = request.path
     return render(request, "stats.html", context)
 
+
 @login_required
 def delete_purchase(request, purchase_id=None):
     purchase = get_object_or_404(Purchase, id=purchase_id)
     purchase.delete()
     return redirect("list_sessions")
 
+
 @login_required
 def add_purchase(request, edition_id=None):
     context = {}