config.py

import os

class Config(object):
    DEBUG = False
    TESTING = False
    CSRF_ENABLED = True
    SECRET_KEY = 'temporary_secret_key'

class ProductionConfig(Config):
    pass

class DevelopmentConfig(Config):
    DEBUG = True
    SQLALCHEMY_DATABASE_URI = 'sqlite:///' + os.path.abspath("uppr.db")

class TestingConfig(Config):
    CSRF_ENABLED = False
    SQLALCHEMY_DATABASE_URI = 'sqlite:////tmp/uppr.db'