dice_roll.py

import random

roll_again_options = ['y', 'yes']


def roll_die(die_sides: int = 6):
    return random.choice(range(1, die_sides + 1))


if __name__ == '__main__':

    # set the number of sides on the die
    sides = input("How Many Sides Are On Your Die? (default: 6): ") or '6'
    while not sides.isdigit():
        print('Please Enter A Whole Number')
        sides = input("How Many Sides Are On Your Die?: ")

    roll_again = 'Y'
    while roll_again.lower() in roll_again_options:
        roll = roll_die(int(sides))
        print(f"You rolled a {roll}.")
        roll_again = input("Would you like to roll again? (Y/n): ") or 'Yes'

    print("Thanks.  Come Again Soon!")

My answer to the dice rolling simulator found here: https://knightlab.northwestern.edu/2014/06/05/five-mini-programming-projects-for-the-python-beginner/

To run the code: python dice_roll.py

I may want to adjust this to use a new different command-line tools like argparse, click or something similar.