diff --git a/.env b/.env
index d8b52ba..0fe8e39 100644
--- a/.env
+++ b/.env
@@ -4,4 +4,4 @@ FLASK_DEBUG=1
 FLASK_ENV=development
 GUNICORN_WORKERS=2
 LOG_LEVEL=debug
-SECRET_KEY='YourSecretKey'
+SECRET_KEY='<YourSecretKey>'
diff --git a/autoapp.py b/autoapp.py
index a447d1a..f037e12 100644
--- a/autoapp.py
+++ b/autoapp.py
@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-"""Create an application instance."""
 
 from flask import g
 from flask_login import current_user
diff --git a/celery_worker.py b/celery_worker.py
index 1cf002f..7517a66 100644
--- a/celery_worker.py
+++ b/celery_worker.py
@@ -3,7 +3,7 @@
 from api.app import create_app
 from api.extensions import celery
 
-# celery worker -A celery_worker.celery -l DEBUG -E -Q <queue_name>
+# celery worker -A celery_worker.celery -l DEBUG -E -Q <queue_name> --concurrency=1
 print(celery)
 
 app = create_app()
diff --git a/setup.cfg b/setup.cfg
index 8dbd742..02455c7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -4,6 +4,7 @@ max-line-length = 120
 exclude = migrations/*
 max-complexity = 10
 
+
 [isort]
 line_length = 88
 multi_line_output = 3
diff --git a/tests/__init__.py b/tests/__init__.py
index aeb77f4..40a96af 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,2 +1 @@
 # -*- coding: utf-8 -*-
-"""Tests for the app."""