from flask import Flask

from flask_restful import Resource, Api

import logging

app = Flask(__name__)

api = Api(app)

# app.logger.debug('A value for debugging')

# app.logger.warning('A warning occurred (%d apples)', 42)

# app.logger.error('An error occurred')

class HelloWorld(Resource):

    def get(self):

        app.logger.info('this is a string')

        app.logger.debug('A value for debugging')

        app.logger.warning('A warning occurred (%d apples)', 42)

        app.logger.error('An error occurred')

        return {'hello': 'world'}

api.add_resource(HelloWorld, '/')

if __name__ == '__main__':

    handler = logging.FileHandler('flask2.log', encoding='UTF-8')

    handler.setLevel(logging.DEBUG)

    logging_format = logging.Formatter(

        '%(asctime)s - %(levelname)s - %(filename)s - %(funcName)s - %(lineno)s - %(message)s')

    handler.setFormatter(logging_format)

    app.logger.addHandler(handler)

    app.run(debug=True)