config.py

class BaseConfig(object):
    DIALECT = 'mysql'
    DRIVER = 'pymysql'
    USERNAME = 'root'
    PASSWORD = 'root'
    HOST = '127.0.0.1'
    PORT = '3306'
    DATABASE = 'playground'

    SQLALCHEMY_DATABASE_URI = "{}+{}://{}:{}@{}:{}/{}?charset=utf8".format(DIALECT, DRIVER, USERNAME, PASSWORD, HOST,
                                                                           PORT, DATABASE)
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SQLALCHEMY_ECHO = True