Calculates the awarded points for a football betting game.

football_betting_points.py

from builtins import int, tuple, max

Result = tuple[int, int]


def points(game: Result, bet: Result) -> int:
    """
    Calculates the awarded points for a given game result and bet.

    - If the bet is exactly the same as the game result, 10 points are awarded.
    - If the bet has the same outcome, between 7 and 1 points are awarded,
      depending on the absolute difference between the goal differences.
    - Otherwise, the bet has a different outcome and 0 points are awarded.

    `Source: https://tippspiel.sueddeutsche.de`

    :param game: The result of the game.
    :param bet: The given bet for the game.
    :return: The amount of points awarded.
    """
    if bet == game:
        return 10

    goal_diff_game = game[0] - game[1]
    goal_diff_bet = bet[0] - bet[1]

    outcome_game = sign(goal_diff_game)
    outcome_bet = sign(goal_diff_bet)

    if outcome_game == outcome_bet:
        return max(7 - abs(goal_diff_game - goal_diff_bet), 1)
    else:
        return 0


def sign(x: int) -> int:
    if x > 0:
        return 1
    elif x == 0:
        return 0
    else:
        return -1


def abs(x: int) -> int:
    return x if x >= 0 else -x


#
# test cases
#

# correct bet
assert points((3, 2), (3, 2)) == 10

# correct outcome, no draw
assert points((1, 0), (2, 1)) == 7
assert points((1, 0), (2, 0)) == 6
assert points((1, 0), (3, 0)) == 5
assert points((1, 0), (5, 1)) == 4
assert points((1, 0), (6, 1)) == 3
assert points((1, 0), (7, 1)) == 2
assert points((1, 0), (7, 0)) == 1
assert points((1, 0), (8, 0)) == 1

# correct outcome, draw
assert points((1, 1), (2, 2)) == 7
assert points((1, 1), (5, 5)) == 7

# incorrect outcome
assert points((2, 1), (1, 2)) == 0