simple script to help determine rankings by comparing combinations

matchups.py

#!/usr/bin/env python3

# simple script to help determine rankings by comparing combinations

import sys
from itertools import combinations

with open(sys.argv[1]) as f:
    items = list(line.strip() for line in f.readlines())
    scores = {item: 0 for item in items}
    matchups = list(combinations(items, 2))
    print(f'There are going to be {len(matchups)} matchups.')
    for a, b in matchups:
        print('Matchup:')
        print(f'\tA) {a}')
        print(f'\tB) {b}')
        while True:
            choice_str = input('Which wins? (A/B) ')
            if choice_str in 'AB':
                choice = (a, b)[0 if choice_str == 'A' else 1]
                scores[choice] += 1
                print('Scores:')
                print(f'{scores[a]} "{a}"')
                print(f'{scores[b]} "{b}"')
                print()
                break
            else:
                print("Please enter either 'A' or 'B'.")
    ranked = sorted(items, key=lambda item: scores[item], reverse=True)
    print('Results:')
    for i, item in enumerate(ranked):
        print(f'{i+1:>3}. {item} ({scores[item]})')