diff --git a/flaskr/__init__.py b/flaskr/__init__.py
index 77b00ed..3974563 100644
--- a/flaskr/__init__.py
+++ b/flaskr/__init__.py
@@ -7,10 +7,10 @@ def create_app(test_config=None):
     # create and configure the app
     app = Flask(__name__, instance_relative_config=True)
     app.config.from_mapping(
-        SECRET_KEY = os.environ.get("SECRET_KEY", default=None),
-        SQLALCHEMY_TRACK_MODIFICATIONS = os.environ.get(
+        SECRET_KEY=os.environ.get("SECRET_KEY", default=None),
+        SQLALCHEMY_TRACK_MODIFICATIONS=os.environ.get(
             "SQLALCHEMY_TRACK_MODIFICATIONS", default=False),
-        SQLALCHEMY_DATABASE_URI = os.environ.get(
+        SQLALCHEMY_DATABASE_URI=os.environ.get(
             "SQLALCHEMY_DATABASE_URI", default=None)
     )
 
@@ -26,10 +26,6 @@ def create_app(test_config=None):
         os.makedirs(app.instance_path)
     except OSError:
         pass
-    # a simple page that says hello
-    @app.route('/hello')
-    def hello():
-        return 'Hello, World!'
 
     from . import db
     db.init_app(app)
diff --git a/flaskr/auth.py b/flaskr/auth.py
index 704f3a3..59519bc 100644
--- a/flaskr/auth.py
+++ b/flaskr/auth.py
@@ -9,6 +9,7 @@ from flaskr.db import db, User
 
 bp = Blueprint('auth', __name__, url_prefix='/auth')
 
+
 @bp.route('/register', methods=('GET', 'POST'))
 def register():
     if request.method == 'POST':
@@ -32,6 +33,7 @@ def register():
 
     return render_template('auth/register.html')
 
+
 @bp.route('/login', methods=('GET', 'POST'))
 def login():
     if request.method == 'POST':
@@ -55,6 +57,7 @@ def login():
 
     return render_template('auth/login.html')
 
+
 @bp.before_app_request
 def load_logged_in_user():
     user_id = session.get('user_id')
@@ -64,11 +67,13 @@ def load_logged_in_user():
     else:
         g.user = User.query.filter_by(id=user_id).first()
 
+
 @bp.route('/logout')
 def logout():
     session.clear()
     return redirect(url_for('index'))
 
+
 def login_required(view):
     @functools.wraps(view)
     def wrapped_view(**kwargs):
diff --git a/flaskr/blog.py b/flaskr/blog.py
index dcc431a..5fe42f4 100644
--- a/flaskr/blog.py
+++ b/flaskr/blog.py
@@ -8,11 +8,13 @@ from flaskr.db import db, Post, User
 
 bp = Blueprint('blog', __name__)
 
+
 @bp.route('/')
 def index():
     posts = Post.query.join(User).order_by(Post.created.desc()).all()
     return render_template('blog/index.html', posts=posts)
 
+
 @bp.route('/create', methods=('GET', 'POST'))
 @login_required
 def create():
@@ -35,6 +37,7 @@ def create():
 
     return render_template('blog/create.html')
 
+
 def get_post(id, check_author=True):
     post = Post.query.filter_by(id=id).first()
 
@@ -46,6 +49,7 @@ def get_post(id, check_author=True):
 
     return post
 
+
 @bp.route('/<int:id>/update', methods=('GET', 'POST'))
 @login_required
 def update(id):
@@ -70,6 +74,7 @@ def update(id):
 
     return render_template('blog/update.html', post=post)
 
+
 @bp.route('/<int:id>/delete', methods=('POST',))
 @login_required
 def delete(id):
diff --git a/flaskr/db.py b/flaskr/db.py
index 457ff10..e5741be 100644
--- a/flaskr/db.py
+++ b/flaskr/db.py
@@ -1,7 +1,6 @@
 from datetime import datetime
 
 import click
-from flask import current_app, g
 from flask.cli import with_appcontext
 from flask_sqlalchemy import SQLAlchemy
 
@@ -11,6 +10,7 @@ db = SQLAlchemy()
 def init_db():
     db.create_all()
 
+
 @click.command('init-db')
 @with_appcontext
 def init_db_command():
@@ -18,10 +18,12 @@ def init_db_command():
     init_db()
     click.echo('Initialized the database.')
 
+
 def init_app(app):
-    db.init_app(app) # Initialize the sql alchemy database
+    db.init_app(app)  # Initialize the sql alchemy database
     app.cli.add_command(init_db_command)
 
+
 # Model definitions
 class User(db.Model):
     id = db.Column(db.Integer, primary_key=True)
@@ -32,6 +34,7 @@ class User(db.Model):
     def __repr__(self):
         return '<User %r>' % self.username
 
+
 class Post(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)