ditto-simulation.py

import sys
import random


all_stats = ['HP', 'Attack', 'Defense', 'Special Attack', 'Special Defense', 'Speed']


def catch_ditto():
    '''Catches a Ditto with a 1/6 chance of having a random max IV value'''
    max_ivs = []
    for stat in all_stats:
        value = random.randint(0, 31)
        if value == 31:
            max_ivs.append(stat)
    return max_ivs


def get_all_ivs():
    '''Returns the number of pokemon caught before all stats have max IV'''
    max_ivs_caught = []
    attempts = 0
    while len(max_ivs_caught) < len(all_stats):
        attempts += 1
        max_ivs = catch_ditto()
        for max_iv in max_ivs:
            if max_iv is not None and max_iv not in max_ivs_caught:
                max_ivs_caught.append(max_iv)
    return attempts


if __name__ == '__main__':
    count = int(sys.argv[1])
    sum_catches = 0
    catches = 0
    for i in range(count):
        catches += 1
        sum_catches += get_all_ivs()
    print 'On average %d catches' % (sum_catches // catches)