Formatting.

src/snek/service/user.py

@@ -1,5 +1,6 @@
-from snek.system.service import BaseService 
-from snek.system import security 
+from snek.system import security
+from snek.system.service import BaseService
+
 
 class UserService(BaseService):
     mapper_name = "user"
@@ -12,6 +13,5 @@ class UserService(BaseService):
         model.username = username
         model.password = await security.hash(password)
         if await self.save(model):
-            return model 
+            return model
         raise Exception(f"Failed to create user: {model.errors}.")
-