# Simple Demonstration of Python Argparser in command line arguments

argparse.py

# Simple Demonstration of Python Argparser in command line arguments# Simple Demonstration of Python Argparser in command line arguments
import argparse
from distutils.util import strtobool

def add_and_display(args):
    print(args)
    print()
    if args.permissions :
        if args.operation == "add":
            print("Adding two numbers :", args.number_1 + args.number_2)
        else:
            print("Subract two numbers :", args.number_1 - args.number_2)

        
if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Trying out some argparsers.')
    parser.add_argument('--permissions', type=strtobool, default=False, required = True,
                        help="Whether to display the output")
    parser.add_argument("--operation", type=str, required=True, choices=["add", "subtract"],
                        help="Operation to be performed")
    parser.add_argument("--number_1", type=int, default=0, required=True, 
                        help="Placeholder for the first number")
    parser.add_argument("--number_2", type=int, default=0, required=False, 
                        help="Placeholder for the second number")
    
    # Below code aggregates the data specified in the previous placeholders
    args = parser.parse_args()

    add_and_display(args)