Literally every python script I write

python.py

#!/usr/bin/env python
import os, argparse, logging


def parse_args():
    parser = argparse.ArgumentParser(description="Super cool thing", formatter_class=argparse.ArgumentDefaultsHelpFormatter)

    io_options_group = parser.add_argument_group("I/O Options")
    io_options_group.add_argument('-in', "--input", help="Input directory")
    io_options_group.add_argument('-out', "--output", help="Output directory")

    options_group = parser.add_argument_group("Options")
    options_group.add_argument('-p', '--pool-size', type=int, default=16, help="Thread-pool size")

    console_options_group = parser.add_argument_group("Console Options")
    console_options_group.add_argument('-v', '--verbose', action='store_true', help='verbose output')
    console_options_group.add_argument('--debug', action='store_true', help='Debug Console')
    console_options_group.add_argument('-log', '--log', nargs='?',  default='None', help="Logging file")

    return parser.parse_args()


def init_logger(args):
    if args.log == 'None':  # No --log flag
        log_file = None
    elif not args.log:  # Flag but no argument
        log_file = os.path.join("log", os.path.splitext(os.path.basename(__file__))[0] + '_log.txt')
    else:  # flag with argument
        log_file = args.log

    if log_file:  # Logging file was specified
        log_file_dir = os.path.split(log_file)[0]
        if log_file_dir and not os.path.exists(log_file_dir):
            os.mkdir(log_file_dir)

        if os.path.isfile(log_file):
            open(log_file, 'w').close()

    global logger
    if args.debug: log_formatter = logging.Formatter('[%(asctime)s][%(levelname)s][%(funcName)s] - %(message)s')
    elif args.verbose: log_formatter = logging.Formatter('[%(asctime)s][%(levelname)s][%(funcName)s] - %(message)s')
    else: log_formatter = logging.Formatter('[log][%(levelname)s] - %(message)s')

    logger = logging.getLogger(__name__)
    if log_file:
        file_handler = logging.FileHandler(log_file)
        file_handler.setFormatter(log_formatter)
        logger.addHandler(file_handler)
    console_handler = logging.StreamHandler()
    console_handler.setFormatter(log_formatter)
    logger.addHandler(console_handler)

    if args.debug: level = logging.DEBUG
    elif args.verbose: level = logging.INFO
    else: level = logging.WARNING

    logger.setLevel(level)


def main():
    args = parse_args()
    init_logger(args)
    
     # code goes here...
     
if __name__ == "__main__":
    main()