Who wanna to be the next?

the_choosed_one.py

import random
import operator
import argparse

from collections import defaultdict


def count(usernames, iter_times):
    result = defaultdict(lambda: 0)
    for _ in range(0, iter_times):
        result[random.choice(usernames)] += 1

    return result

def pretty_print(count_result):
    sorted_users = sorted(count_result.items(),
                          key=operator.itemgetter(1),
                          reverse=True)

    max_username_length = max([len(x) for x in count_result.keys()])
    format_str = '{:%s}|{:>10}' % (max_username_length + 1)

    print('')
    print(format_str.format('User', 'Count'))
    print(format_str.format('-' * (max_username_length + 1), 10 * '-'))

    for username, count in sorted_users:
        print(format_str.format(username, count))

    print('\nThe winner is: {}'.format(sorted_users[0][0]))

def main():
    parser = argparse.ArgumentParser(description='Select the next one.')
    parser.add_argument('usernames', metavar='competitors', type=str, nargs='+',
                        help='Who wanna join the Game?')
    parser.add_argument('-t', '--times', metavar='N', type=int,
                        default=100, help='iter times(default:100)')

    args = parser.parse_args()

    pretty_print(count(args.usernames, args.times))

if __name__ == '__main__':
    main()