diff --git a/app/cabinet/routes/admin_landings.py b/app/cabinet/routes/admin_landings.py
index 6b74e622..b3bf3dea 100644
--- a/app/cabinet/routes/admin_landings.py
+++ b/app/cabinet/routes/admin_landings.py
@@ -336,7 +336,15 @@ async def list_landings(
     """List all landing pages with purchase stats."""
     landings = await get_all_landings(db)
     all_stats = await get_all_landing_purchase_stats(db)
-    empty_stats = {'total': 0, 'pending': 0, 'paid': 0, 'delivered': 0, 'pending_activation': 0, 'failed': 0, 'expired': 0}
+    empty_stats = {
+        'total': 0,
+        'pending': 0,
+        'paid': 0,
+        'delivered': 0,
+        'pending_activation': 0,
+        'failed': 0,
+        'expired': 0,
+    }
 
     items = []
     for landing in landings:
diff --git a/app/cabinet/routes/admin_payment_methods.py b/app/cabinet/routes/admin_payment_methods.py
index cec8cef8..99158da9 100644
--- a/app/cabinet/routes/admin_payment_methods.py
+++ b/app/cabinet/routes/admin_payment_methods.py
@@ -76,6 +76,7 @@ class PaymentMethodConfigUpdateRequest(BaseModel):
             if not isinstance(key, str) or len(key) > 50:
                 raise ValueError('sub_options keys must be strings of at most 50 characters')
         return v
+
     first_topup_filter: str | None = Field(default=None, pattern='^(any|yes|no)$')
     promo_group_filter_mode: str | None = Field(default=None, pattern='^(all|selected)$')
     allowed_promo_group_ids: list[int] | None = None
diff --git a/app/cabinet/routes/landing.py b/app/cabinet/routes/landing.py
index 18ec2680..18587347 100644
--- a/app/cabinet/routes/landing.py
+++ b/app/cabinet/routes/landing.py
@@ -520,7 +520,7 @@ async def create_landing_purchase(
         for m in sorted_methods:
             mid = m.get('method_id', '')
             if body.payment_method.startswith(mid + '_'):
-                suffix = body.payment_method[len(mid) + 1:]
+                suffix = body.payment_method[len(mid) + 1 :]
                 # Validate suffix is a known sub-option
                 method_def = method_defaults.get(mid)
                 available = (method_def.get('available_sub_options') if method_def else None) or []
diff --git a/app/services/payment_service.py b/app/services/payment_service.py
index 34bfa2c6..0ab2f609 100644
--- a/app/services/payment_service.py
+++ b/app/services/payment_service.py
@@ -402,7 +402,9 @@ class PaymentService(
                 getter_name = _GETTER_OVERRIDES.get(model_name, f'get_{model_name}_payment_by_id')
                 getter = getattr(crud_module, getter_name, None)
                 if getter is None:
-                    logger.warning('No getter found for patching guest metadata', model_name=model_name, getter_name=getter_name)
+                    logger.warning(
+                        'No getter found for patching guest metadata', model_name=model_name, getter_name=getter_name
+                    )
                     return
                 payment_record = await getter(db, local_payment_id)
                 if payment_record is None:
@@ -537,8 +539,8 @@ class PaymentService(
                 logger.warning('Pal24 is not enabled, cannot create guest payment')
                 return None
 
-            pal24_method = 'sbp' if payment_method == 'pal24_sbp' else (
-                'card' if payment_method == 'pal24_card' else None
+            pal24_method = (
+                'sbp' if payment_method == 'pal24_sbp' else ('card' if payment_method == 'pal24_card' else None)
             )
 
             result = await self.create_pal24_payment(