Game of dice

from random import randint         #Import randint that belong to random numbers
import pprint                      #To print dictionary better

#Creating variables
players = ("player" , "computer")  #stores all player names
active_player = randint(0, 1)      #number for the player in turn
#Dictionary that stores all dice in the game
game = {"player" : {"active" :[], "saved" : []}, "computer" : {"active" : [], "saved" : []}}
def player_score(d):
    """
    a funktion that calculates the result for a player
    :param d:   Dictionary with two lists, active and saved
    :return:    The sum of the dice's value in both lists
    """
def change_active_player(save=False):
    global active_player  # Telling that we want to use active_player inside the function
    if save:
      # .extend allows us to add a list to another
     game[players[active_player]]['saved'].extend(game[players[active_player]]['active'])
    # Empty the active list
    game[players[active_player]]['active'] = []

    # Change aktive player, can be written: active_player (active_player + 1) % 2
if active_player == 1:          #If the value for avtive_player is 1---
        active_player = 0           #...set it to 0
else:                           #...otherwise
        active_player = 1           #...set it to 1
print("Player changes")
def standings():
    """
    Prints the stance
    :return:    strict with the stand
    """
    s = "{} has hit {} (sum {} point)".format(players[active_player],
                                              game[players[active_player]]['active'], sum(game[players[active_player]]['active']))
    s += "\nTotal you have {} points and the computer has {} points".format(player_score(game['player']),
                                                                            player_score(game['computer']))
    return s

#prints the welcome message
input("""#######################################
# Welcome to the dice game of 40 #
#######################################
Game of 40 is a dice game where you first have to reach at least 40 points.
If you hit a six, you lose the points you have not saved and the tour goes
over to the opponent. You can save your points at any time and let the luck
go over to the opponent.
The player who starts the game is: {}
Press enter to start the game.""".format(players[active_player]))

#Run n endless loop
while True:

    #Rolls a dice
    dice = randint(1,6)

    #Prints the value of the dice
    print("\nDice value: {}".format(dice))

    #If dice value is 6
    if dice == 6:
        change_active_player()
    else:
        # Stores the dice in the active player list
        game[players[active_player]]["active"].append(dice)

        if active_player == 1:                         #If the value for active_player is 1...
            active_player = 0                          #...Set it to 0
        else:                                          #...otherwise
            active_player = 1                          #...set it to 1
        print("Player changed")

    # Prints the stand
    print(standings())

    # Prints whose turn it is to play.
    print("Player to hit: {}".format(players[active_player]))

    # Logic for the different players
    if players[active_player] == 'computer':            #Computer playes
        #If the computer has more than two dice in its active-list...
        if len(game[players[active_player]]['active']) > 2:
            change_active_player(True)                  #...then these must be saved and the turn goes to the player
        else:
            input("Press to display the computers next dice")
    else:                                               # Player playes
     input("Press enter to hit a dice again")
else:
    while True:
        val = input("Choose [K] to throw th dice again or [S] to save your dices: ")
        if val.upper() == 'K' :                     #Hit the dice
            break
        elif val.upper() == 'S':                    #Save your dice
            change_active_player(True)              #To save dice and leave the turn
            break
        else:
            print("Incorrect entry, try again")
        # Prints game
        #pprint.pprint(game)

        #Prints whose turn it is to play
        print("Player to hit: {}".format(players[active_player]))

        #Wait for input before running the loop again
        input("Press enter to hit a dice again.")

        #If someone has scored more than 39 then they have won...
        if player_score(game['player']) > 39 or player_score(game['computer']) > 39:
            break          #...Break loop
        #prints game
        pprint.pprint(game)

        #Wait for input before we run the loop again
        input("Press the entrance button to roll a dice")
        #The game ends and winner is played
        #Check first who won, since no one can get at least 40, we know someone has won
        if player_score(game['player']) > player_score(game['computer']):
            print("Congratulations! you have beaten your computer with {} vs {} points.".format(player_score(game['player']),
                                                                                                                player_score(game['computer'])))
        else:
            print("You have lost to the computer with {} vs {} points.".format(player_score(game['computer']),
                                                                                player_score(game['player'])))