Why is my variable not updating in the while loop?

Question

may I ask what’s wrong with my code as the variable is not working like it’s supposed to in the while loop. It’s supposed to go like player 1, 2 and 3 but it keep on repeating as player 1 instead. How can I fix it?

def display_game_options(player):
    """
    Prints the game options depending on if a player's score is
    >= 14.

    Arguments:
      - player: A player dictionary object
    """
    player = {1: {'name': 'Player 1', 'score': 0, 'stayed': False, 'at_14': False, 'bust': False},
              2: {'name': 'Player 2', 'score': 0, 'stayed': False, 'at_14': False, 'bust': False},
              3: {'name': 'Player 3', 'score': 0, 'stayed': False, 'at_14': False, 'bust': False},
              4: {'name': 'Player 4', 'score': 0, 'stayed': False, 'at_14': False, 'bust': False}}

    n = 0
    playing = True

    while playing is True:
        print("--------", player[n + 1]['name'], "'s turn--------")
        print(player[n + 1]['name'], "'s score: ", player[n + 1]['score'])
        print("1. Roll")
        print("2. Stay")
        decison = input("")
        if player[n + 1]['score'] >= 14:
            print("3. Roll one")

    raise NotImplementedError

Asked By: Miwoo Nya

||

Source

Answer 1

It states "player 1" continuously because it uses n to figure that out, and n never changes in your loop.

If you want to cycle through the players, you’ll need to modify n with something like (at the end of the loop, but within it):

n = (n + 1) % 4 # gives 0, 1, 2, 3, 0, 1, ...

For example, you can see how this works in the following transcript:

>>> n = 0
>>> for _ in range(10):
...     print(n+1)
...     n = (n + 1) % 4
...
1
2
3
4
1
2
3
4
1
2

Answered By: paxdiablo

Why is my variable not updating in the while loop?

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