DB_HOST = '127.0.0.1'
DB_USER = 'root'
DB_PASSWORD = ''

$ sudo mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 16

$ mysql -u root
ERROR 1698 (28000): Access denied for user 'root'@'localhost'

$ pip3 freeze
Django==1.10.5
mysqlclient==1.3.9