python script bootstrap

bootstrap.py

import logging
import argparse
import datetime
import sys

FORMAT = '%(asctime)-15s [%(levelname)s] %(message)s'
LOGLEVEL = logging.INFO

parser = argparse.ArgumentParser(description='Program descriptiom.')
parser.add_argument('-sf', '--someflag', const=True, action='store_const', help='Option description')
parser.add_argument('-ao', '--another-option', type=int, help='Another option')
parser.add_argument('-f', '--logfile', type=str, help='Log file name (default: stderr)')
parser.add_argument('-l', '--loglevel', type=str, help='Log level, CRITICAL, ERROR, WARNING, INFO or DEBUG (default: INFO)')

args = parser.parse_args()

# LOGGING
logfile = sys.stderr
if args.logfile:
    print "Logging to", args.logfile
    logfile = open(args.logfile, 'a')

if args.loglevel:
    level = getattr(logging, args.loglevel.upper(), None)
    if level not in (logging.CRITICAL, logging.ERROR, logging.WARNING, logging.INFO, logging.DEBUG):
        raise ValueError('Invalid log level (%s=%s). Should be CRITICAL, ERROR, WARNING, INFO or DEBUG.' % (args.loglevel, level))
else:
    level = LOGLEVEL
logging.basicConfig(file=logfile, level=level, format=FORMAT)