Flask 变量用于 app_context

Question

Each time you use the self-written CLI command, a call to app_context occurs, as a result of which extra Blueprint is connected, as well as loggers that are called when the project starts. Is there any list or variable in which I can write from WHERE the call to app_context occurs. __name__ is the same everywhere, always returns 'app'.

project.py :

from app import create_app, cli
app = create_app()
cli.register(app)

app/__init__.py :

db = SQLAlchemy()
migrate = Migrate()


def create_app(config_class=Config):
    app = Flask(__name__)
    app.config.from_object(config_class)

    db.init_app(app)
    migrate.init_app(app, db)

    app.logger.setLevel(logging.INFO)
    app.logger.info('Project startup')

    return app

app.logger.info('Project startup') called every time when I'm calling CLI command. What condition can be added for not call this function when using CLI commands?

Answer 1

You don't need to set the log level if you want to disable app.logger logs. Let's check:

app = Flask('')
# app logs are disabled. uncomment to see app logs.
# app.logger.setLevel(logging.INFO)
app.logger.info('Project startup')

So you can configure log level using additional argument:

def create_app(config_class=Config, log_level=None):
    app = Flask(__name__)
    app.config.from_object(config_class)
    if log_level:
        app.logger.setLevel(logging.INFO)

One more good way is use 2 different configs(first - for web app , second - for CLI app ). In this case you'll have possibility to customize any setting(including log level ).