diff --git a/examples/containers/declarative.py b/examples/containers/declarative.py
index 2e5fb421..f095d5e9 100644
--- a/examples/containers/declarative.py
+++ b/examples/containers/declarative.py
@@ -12,6 +12,7 @@ class Container(containers.DeclarativeContainer):
 
     factory2 = providers.Factory(object)
 
+
 # Creating some objects:
 object1 = Container.factory1()
 object2 = Container.factory2()
diff --git a/examples/miniapps/movie_lister/app_db_csv.py b/examples/miniapps/movie_lister/app_db_csv.py
index b224ba40..2f2864d8 100644
--- a/examples/miniapps/movie_lister/app_db_csv.py
+++ b/examples/miniapps/movie_lister/app_db_csv.py
@@ -71,6 +71,7 @@ class CsvApplication(containers.DeclarativeContainer):
                                  csv_file_path=settings.MOVIES_CSV_PATH,
                                  delimiter=',')
 
+
 if __name__ == '__main__':
     DbApplication.init_db()
     DbApplication.main()
diff --git a/examples/providers/overriding_simple.py b/examples/providers/overriding_simple.py
index d68dd5f0..77a5a6d0 100644
--- a/examples/providers/overriding_simple.py
+++ b/examples/providers/overriding_simple.py
@@ -6,6 +6,7 @@ import dependency_injector.providers as providers
 class User(object):
     """Example class User."""
 
+
 # Users factory:
 users_factory = providers.Factory(User)
 
@@ -22,6 +23,7 @@ assert isinstance(user1, User) and isinstance(user2, User)
 class SuperUser(User):
     """Example class SuperUser."""
 
+
 # Overriding users factory:
 users_factory.override(providers.Factory(SuperUser))
 
diff --git a/examples/providers/overriding_users_model.py b/examples/providers/overriding_users_model.py
index 84394118..b3ab2adc 100644
--- a/examples/providers/overriding_users_model.py
+++ b/examples/providers/overriding_users_model.py
@@ -25,6 +25,7 @@ class UsersService(object):
         """Find user by his id and return user model."""
         return self.user_cls(id=id, password='secret' + str(id))
 
+
 # Users factory and UsersService provider:
 users_service = providers.Factory(UsersService, user_cls=User)
 
@@ -69,6 +70,7 @@ class ExtendedUsersService(UsersService):
         user.gender = 'male'
         return user
 
+
 # Overriding users_service provider:
 extended_users_service = providers.Factory(ExtendedUsersService,
                                            user_cls=ExtendedUser)