Demonstrates simple usage of argparser.

python_argparser_example.py

import argparse

if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description='Describe the utility.'
    )
    # This is a required argument
    parser.add_argument(
        'filepath',
        type=str,
        help='Filepath to use.'
    )
    # This is used as a boolean flag. If set, the variable (with name 'all' as set by dest) is true
    parser.add_argument(
        '-A', '--all',
        action='store_true', dest='all',
        help='Use this flag to enable all.'
    )
    # Metavar is used in help as an example argument input. String will default to None if argument is not provided.
    parser.add_argument(
        '-i', '--individual',
        metavar='"FIRSTNAME LASTNAME"', type=str, dest='individual',
        help='First and last name. Single or double quotes must be used to capture the space.'
    )
    # If no dest is specified, it will use 'time'. Use default value if none is provided.
    parser.add_argument(
        '-t', '--time',
        type=int,
        help='Set time',
        default=10
    )

    args = parser.parse_args()

    print(f"all params: {args}")
    print(f"all: {args.all}")
    print(f"filepath: {args.filepath}")
    print(f"individual: {args.individual}")
    print(f"time: {args.time}")

    # Input:
    #   python_argparser_example.py foobar
    #
    # Output:
    #   all params: Namespace(all=False, filepath='foobar', individual=None, time=10)
    #   all: False
    #   filepath: foobar
    #   individual: None
    #   time: 10