config.py

import os

basedir = os.path.abspath(os.path.dirname(__file__))
class Config:
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'hard to guess string'
    MAIL_SERVER = os.environ.get('MAIL_SERVER', 'smtp.googlemail.com')
    MAIL_PORT = int(os.environ.get('MAIL_PORT', '587'))
    MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS', 'true').lower() in \
        ['true', 'on', '1']
    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
    FLASKY_MAIL_SUBJECT_PREFIX = '[Flasky]'
    FLASKY_MAIL_SENDER = 'Flasky Admin prof.seeyouholler@gmail.com'
    FLASKY_ADMIN = os.environ.get('FLASKY_ADMIN')
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    
    @staticmethod
    def init_app(app):
        pass

class DevelopmentConfig(Config):
    DEBUG = True
    SQLALCHEMY_DATABASE_URI = os.environ.get('DEV_DATABASE_URL') or 'sqlite:///' + os.path.join(basedir, 'data.dev.sqlite')
    
class TestingConfig(Config):
    DEBUG = True
    SQLALCHEMY_DATABASE_URI = os.environ.get('TEST_DATABSE_URL') or 'sqlite://'
    
class ProductionConfig(Config):
    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///' + os.path.join(basedir, 'data.sqlite')
    
config = {
    'development': DevelopmentConfig,
    'testing': TestingConfig,
    'production': ProductionConfig,
    'default': DevelopmentConfig
}