pickle.py

import random

def main():

    winsA = 0
    winsB = 0

    for x in range(1000):
        scoreA = 7
        scoreB = 1

        while (scoreA < 11 and scoreB < 11) or abs(scoreA-scoreB)<2:
            x = random.random()
            if x>.5:
                scoreA += 1
            else:
                scoreB += 1

        print(f'{scoreA}-{scoreB}')

        if scoreA > scoreB:
            winsA += 1
        else:
            winsB += 1

    winPct = round(winsA/(winsA+winsB)*100)
    print(f'With a 7-1 lead, player A wins {winPct}% of the simulations.')

main()