lick-frog.py

import random

def main():
    results = {}
    results['OO'] = 0
    results['OX'] = 0
    results['XO'] = 0
    results['XX'] = 0

    for i in range(10000):
        A = random.choice(['O', 'X'])
        B = random.choice(['O', 'X'])
        if A == 'O' and B == 'O': # the question said this combination *didn't* happen
            continue

        results[A+B] += 1

    print(results)
    # {'OO': 0, 'OX': 2479, 'XO': 2457, 'XX': 2556}


main()