Examples of libraries that can be noisy: * Flask-CORS: When I first started using this it's default logging level was really noisy. * factory (aka Factory Boy

Examples of libraries that can be noisy: * Flask-CORS: When I first started using this it's default logging level was really noisy. * factory (aka Factory Boy): You can turn in DEBUG level to get a deluge of information about what is happening with your test data. * SQLAlchemy: The 'echo' option to create_engine isn't the only way that you can control logging. E.g.: import logging logging.basicConfig() logging.getLogger('sqlalchemy.engine').setLevel(logging.INFO) Using logging_tree will give you a good idea of the loggers that have been initialized on the libraries that you're using.