Flask logging - Cannot get it to write to a file

Question

Ok, here\'s the code where I setup everything:

if __name__ == \'__main__\':
    app.debug = False

    applogger = app.logger

    file_handler = FileHandler         


        

Answer 1

Logging Quick start

-- This code will not work with more than one log file inside a class/or import

import logging
import os # for Cwd path 
path = os.getcwd()


logFormatStr = '%(asctime)s  %(levelname)s - %(message)s'
logging.basicConfig(filename=path + '\logOne.log', format=logFormatStr, level=logging.DEBUG), logging.info('default message')

for Multiple logging file

creating a instance of logging using logging.getLogger() method---

1. for each logger file required one instance of logging
2. we can create multiple log file but not with same instance

Create new logger instance with name or Hardcore_String ----preferred (name) this will specify exact class from where it call

logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)

type of logging -- INFO, DEBUG, ERROR, CRITICAL, WARNING

DEBUG----Detailed information, typically of interest only when diagnosing problems.

INFO----Confirmation that things are working as expected.

WARNING----An indication that something unexpected happened, or indicative of some problem in the near future (e.g. ‘disk space low’). The software is still working as expected.

ERROR----Due to a more serious problem, the software has not been able to perform some function.

CRITICAL----A serious error, indicating that the program itself may be unable to continue running.

Create New Formatter

format = logging.Formatter('%(asctime)s %(levelname)s - %(message)s')

create new file Handler

file_handel = logging.FileHandler(path + '\logTwo.log')

set format to FileHandler & add file_handler to logging instance [logger]

file_handel.setFormatter(format)
logger.addHandler(file_handel)

add a message to logOne.log file and logTwo.log with respective setlevel

logger.info("message for logOne")
logging.debug(" message for logTwo")

for more details