Flask logging example

foo.log

A warning occurred (42 apples)
An error occurred

server.py

import logging
#from logging.handlers import RotatingFileHandler

from flask import Flask

app = Flask(__name__)

@app.route('/')
def foo():
    app.logger.warning('A warning occurred (%d apples)', 42)
    app.logger.error('An error occurred')
    app.logger.info('Info')
    return "foo"

if __name__ == '__main__':
    #handler = RotatingFileHandler('foo.log', maxBytes=10000, backupCount=1)
    #handler.setLevel(logging.INFO)
    #app.logger.addHandler(handler)
    app.run(debug=True)