Python use module logging to create log file.

import logging
import time

logging.basicConfig(filename='logfile.log', level=logging.DEBUG, \
format='%(asctime)s %(name)-5s %(levelname)-5s %(message)s', \
datefmt='%m-%d %H:%M')


def main():
    try:
       mathFail = 1/0
    except Exception, e:
        t=time.ctime()
            logging.info(str(e))

if "__main__" == __name__:
main()