python - 如何从类中获取变量的每个实例的列表？

Question

我正在尝试找到一种方法来从 Basketball 类中获取 self.average 变量的所有实例的列表。然后我将执行 max(list) 来获取最大值。

class Basketball:
    def __init__(self, name, goals, shots):
        self.name = name
        self.goals = goals
        self.shots = shots
        self.average = shots / goals

    def display_average(self):
        """
        >>> b1 = Basketball("Karen", 20, 80)
        >>> b1.display_average()
        'Player: Karen, average goals per game: 4'
        """
        returnString = f"Player: {self.name}, average goals per game: {self.average:.2f}"
        return returnString

if __name__ == "__main__":
    player1 = Basketball("Karen", 20, 80)
    print(player1.display_average())
    player2 = Basketball("Alex", 4, 19)
    print(player2.display_average())

Answer 1

您可以创建一个列表并将该类的所有实例存储在其中。然后，您可以从列表中提取所有平均值并从中获取最大值。我会使用这样的列表理解:

if __name__ == "__main__":
    basketball_list = []
    basketball_list.append(Basketball("Karen", 20, 80))
    basketball_list.append(Basketball("Alex", 4, 19))
    best_avg = max([i.average for i in basketball_list])