Refining the logging method in python tornado

Question

I am trying to log the actions in a function and I have written the following function to log responses to different files based on the type of response ie info,error,debug and warning.

logging.basicConfig(filename='indivi_service.log',
                    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s' )
def setup_logger(logger_name, log_file, level=logging.DEBUG):
    l = logging.getLogger(logger_name)
    formatter = logging.Formatter()
    fileHandler = logging.FileHandler(log_file)
    fileHandler.setFormatter(formatter)
    handler = TimedRotatingFileHandler(logger_name,
                               when="d",
                               interval=1,
                               backupCount=100)


l.setLevel(level)
l.addHandler(fileHandler)
l.addHandler(handler)


setup_logger('debug', r'debug')
setup_logger('error', r'error')
setup_logger('warning', r'warning')
setup_logger('info', r'info')
debug = logging.getLogger('debug')
error = logging.getLogger('error')
warning = logging.getLogger('warning')
info = logging.getLogger('info')


class Info(APIHandler):
    @gen.coroutine
    def post(self):
        req = json.loads(self.request.body)
        resp, content = client(item_id=req['item_id'])
        debug.debug(content)
        info.info(hello world)
        warning.warn('warning message')
        error.error('error message')

The problem that I am facing is that a response is printed twice each time I call a function.

for example: info.log

hello world hello world

Can anyone tell me why is it happening like. This is the case with all the log files.

Thanks

Answer 1

try:

import logging
import logging.handlers

logging.basicConfig(filename='indivi_service.log',
                    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s' )
def setup_logger(logger_name, log_file, level=logging.DEBUG):
    l = logging.getLogger(logger_name)
    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
    handler = logging.handlers.TimedRotatingFileHandler(str(log_file)+'.log', when="d", interval=1, backupCount=100)
    handler.setFormatter(formatter)

    l.setLevel(level)
    l.addHandler(handler)


setup_logger('debug', r'debug')
setup_logger('error', r'error')
setup_logger('warning', r'warning')
setup_logger('info', r'info')
debug = logging.getLogger('debug')
error = logging.getLogger('error')
warning = logging.getLogger('warning')
info = logging.getLogger('info')


if __name__ == "__main__":
    info.info('hello world')
    error.info('hello world')

after run this script, file info.log has one 'hello world' and error.log also has only one 'hello world'.