how to get command line arguments in python with flags code example

Example 1: python arguments

import sys

print ("the script has the name %s" % (sys.argv[0])

Example 2: argparse accept only few options

...
parser.add_argument('--val',
                    choices=['a', 'b', 'c'],
                    help='Special testing value')

args = parser.parse_args(sys.argv[1:])