Flask Logging

Log to a file

import logging
from logging import Formatter
from logging.handlers import RotatingFileHandler


# Log
handler = RotatingFileHandler('weather.log', maxBytes=100000, backupCount=5)
handler.setLevel(logging.INFO)
handler.setFormatter(Formatter('%(asctime)s %(levelname)s: %(message)s [in %(module)s - %(funcName)s:%(lineno)d]'))
app.logger.addHandler(handler)

Add log info and debug

app.logger.info('Begin to insert current weather:{}'.format(current['location']))
app.logger.debug('current basic weather:{}'.format(basic))