hello.py

import logging
import wrap


logger = logging.getLogger(__name__)
wlogger = wrap.LoggerWrapper(logger)


def hello():
    logger.info("hello")


def hello2():
    wlogger.info("hello")


def log_with_additional_info(message, *args, **kwargs):
    logger.info("additional: {}".format(message), *args, **kwargs)


def hello3():
    log_with_additional_info("hello")

main.py

import logging
import hello

format = "time:%(asctime)s\tlevel:%(levelname)s\tmsg:%(message)s\tlocation:%(pathname)s(%(lineno)s)\tfn:%(funcName)s"
logging.basicConfig(level=logging.DEBUG, format=format)

hello.hello()
hello.hello2()
hello.hello3()

wrap.py

class LoggerWrapper:
    def __init__(self, logger):
        self.logger = logger

    def info(self, *args, **kwargs):
        # do something
        self.logger.info(*args, **kwargs)

time:2016-09-22 04:32:56,354    level:INFO  msg:hello   location:~/work/hello.py(10)    fn:hello
time:2016-09-22 04:32:56,354    level:INFO  msg:hello   location:~/work/wrap.py(7)  fn:info
time:2016-09-22 04:32:56,354    level:INFO  msg:additional: hello   location:~/work/hello.py(18)    fn:log_with_additional_info