a.py

import random
    
    total_players = 0
    total_rolls = 0

    seed = int(input("Please enter a seed value: "))
    random.seed(seed)

    play_again = 'y'
    while play_again == 'y':
        total_players += 1
        rolls = 0
        got_six = False
        while not got_six:
            rolls += 1
            roll = random.randint(1, 6)
            print("You rolled a", roll)
            if roll == 6:
                print("Congratulations! It took you", rolls, "rolls to get a 6.")
                total_rolls += rolls
                got_six = True

        average_rolls = total_rolls / total_players if total_players > 0 else 0
        print("Average number of rolls to get a 6:", average_rolls)

        valid_input = False
        while not valid_input:
            play_again = input("Do you want to play again? (y/Y/n/N): ")
            if play_again in ['Y', 'y']:
                play_again = 'y'
                valid_input = True
            elif play_again in ['N', 'n']:
                play_again = 'n'
                valid_input = True
            else:
                print("Invalid input. Please enter 'y', 'Y' 'n' or 'N'.")
            
    print(total_players, "players have played the game in total. Die has been rolled", total_rolls, "times.")
    print("Thank you for playing!")