python argument parser default value

parser.add_argument("-v", "--verbose", action="store_true",
                    default="your default value", help="verbose output")

Here is what the above code is Doing:
1. We’re creating a parser object.
2. We’re adding an argument to the parser object.
3. We’re telling the parser object to parse the command line arguments.
4. We’re printing the results of the parser.