Python 3 script/command-line skeleton

skript.py

#!/usr/bin/env python3
"""
Description
"""
from argparse import ArgumentParser
import logging
import os
import sys

from somewhere import main

__author__ = 'First Last'
__version__ = '0.0'

epilog = 'system (default) encoding: {}'.format(sys.getdefaultencoding())
parser = ArgumentParser(
    usage='%(prog)s [options] [FILE ...]',
    description=__doc__, epilog=epilog,
    prog=os.path.basename(sys.argv[0])
)

parser.add_argument('files', metavar='FILE', nargs='*', type=open,
                    help='input file(s); if absent, read from <STDIN>')
parser.add_argument('--version', action='version', version=__version__)
parser.add_argument('--verbose', '-v', action='count', default=0,
                    help='increase log level [WARN]')
parser.add_argument('--quiet', '-q', action='count', default=0,
                    help='decrease log level [WARN]')
parser.add_argument('--logfile', metavar='FILE',
                    help='log to file instead of <STDERR>')

args = parser.parse_args()
files = args.files if args.files else [sys.stdin]

# Logging setup
log_adjust = max(min(args.quiet - args.verbose, 2), -2) * 10
logging.basicConfig(filename=args.logfile, level=logging.WARNING + log_adjust,
                    format='%(levelname)-8s %(module) 10s: %(funcName)s %(message)s')
logging.info('verbosity increased')
logging.debug('verbosity increased')

for input_stream in files:
    try:
        main(input_stream)
    except:
        logging.exception("unexpected program error")
        parser.error("unexpected program error")