os.getenv(“ENV_VAR_NAME“, “default_value“)

parser = argparse.ArgumentParser(description=‘Parse command line options.‘)
parser.add_argument(‘integers‘, metavar=‘c‘, type=int, nargs=‘+‘,
help=‘an integer for the accumulator‘)
parser.add_argument(‘–sum‘, dest=‘accumulate‘, action=‘store_const‘,
const=sum, default=max,
help=‘sum the integers (default: find the max)‘)

args = parser.parse_args([‘–sum‘, ‘7‘, ‘-1‘, ‘42‘])
print(args.accumulate(args.integers))

# put in entry point file
CHAR_GREEN = ‘33[32m‘
CHAR_RESET = ‘33[0m‘
FORMAT = f“{CHAR_GREEN}%(asctime)s %(levelname)s %(name)s {CHAR_RESET}: %(message)s“
basicConfig(level=INFO, format=FORMAT)

# put in all files
logger = getLogger(__name__)

# logging code
logger.info(‘hello‘)