python cli template

python-cli-template.py

import sys
import logging
import traceback
from optparse import OptionParser

def main():
    (options, args) = setup()
    return 0

def setup():
    parser = OptionParser()
    return parser.parse_args()

def format_exception(e):
    # this method credit to https://stackoverflow.com/a/12539332
    # ...why doesn't it use the exception argument? lol
    exception_list = traceback.format_stack()
    exception_list = exception_list[:-2]
    exception_list.extend(traceback.format_tb(sys.exc_info()[2]))
    exception_list.extend(traceback.format_exception_only(sys.exc_info()[0], sys.exc_info()[1]))
    exception_str = "Traceback (most recent call last):\n"
    exception_str += "".join(exception_list)
    exception_str = exception_str[:-1]
    return exception_str


if __name__ == '__main__':
    try:
        format = '%(levelname)s - %(asctime)s -> %(message)s'
        logging.basicConfig(format=format, level=logging.DEBUG)
        exit(main())
    except Exception as e:
        logging.fatal(format_exception(e))
        exit(1)