dnd advantage vs regular vs disadvantage

adv_simulation.py

import random
from collections import Counter

simulations = 1000000


def dice_roll():
    return random.randint(1, 20)


def show_outcome(nam, counter):
    total = 0
    for key, val in counter.items():
        total += key * val
    print(nam, round(total / simulations, 2))


def do_run():
    adv_counter = Counter()
    reg_counter = Counter()
    dis_counter = Counter()

    for sim in range(simulations):
        outcome = dice_roll()
        outcome2 = dice_roll()
        adv_counter.update([max(outcome, outcome2), ])
        reg_counter.update([outcome])
        dis_counter.update([min(outcome, outcome2), ])

    show_outcome('advantage   ', adv_counter)
    show_outcome('regular     ', reg_counter)
    show_outcome('disadvantage', dis_counter)


do_run()

# advantage    13.82
# regular      10.51
# disadvantage 7.18