__init__.py 文件源码

def create_app(config_name=None):
    logger.info('Creating flask app...')
    app = Flask(__name__)

    if config_name is None:
        logger.info('Config name not supplied, searching environment')
        config_name = os.environ.get('SDV_APP_SETTINGS', 'development')
        logger.info('Config name set to: {}'.format(config_name))

    logger.info('Initialising extensions')
    app.config.from_object(config[config_name])
    recaptcha.init_app(app=app)
    bcrypt.init_app(app)
    mail.init_app(app)
    censor.init_app(app=app)

    app.secret_key = app.config['SECRET_KEY']
    app.jinja_env.trim_blocks = True
    app.jinja_env.lstrip_blocks = True
    app.wsgi_app = ProxyFix(app.wsgi_app)

    if app.config['USE_SQLITE']:
        logger.info('Application set to use SQLite')
        app.database = app.config['DB_SQLITE']
        app.sqlesc = '?'

        def connect_db():
            return sqlite3.connect(app.database)
    else:
        logger.info('Application set to use Postgres')
        app.database = 'dbname=' + app.config['DB_NAME'] + ' user=' + app.config[
            'DB_USER'] + ' password=' + app.config['DB_PASSWORD']
        app.sqlesc = '%s'

    return app