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'
    SQLALCHEMY_COMMIT_ON_TEARDOWN = True
    FLASK_MAIL_SUBJECT_PREFIX = '[Flasky]'
    FLASK_MAIL_SENDER = 'Flasky Admin <flasky@example.com>'
    FLASK_ADMIN = os.environ.get("FLASK_ADMIN")

    @staticmethod
    def init_app(app):
        pass
class DevelopmentsConfig(Config):
    DEBUG = True
    MAIL_SERVER = 'smtp.googlemail.com'
    MAIL_PORT = 587
    MAIL_USE_TLS = True
    MAIL_USERNAME = os.environ.get("MAIL_USERNAME")
    MAIL_PASSWORD = os.environ.get("MAIL_PASSWORD")
    SQLALCHEMY_DATABASE_URI = os.environ.get('DEV_DATABASE_URL') or \
        'sqlite:///'+os.path.join(basedir, 'data-dev.sqlite')
    SQLALCHEMY_TRACK_MODIFICATIONS = True
    SQLALCHEMY_COMMIT_TEARDOWN = True


class ProductionConfig(Config):
    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
        'sqlite:///'+os.path.join(basedir, 'data.sqlite')
class TestingConfig(Config):
    TESTING = True
    SQLALCHEMY_DATABASE_URI = os.environ.get('TEST_DATABASE_URL') or \
        'sqlite:///'+os.path.join(basedir, 'data-test.sqlite')

config = {
    'development':DevelopmentsConfig,
    'production':ProductionConfig,
    'default':DevelopmentsConfig,
    'testing':TestingConfig
}