如何從類中獲取變量的每個實例的列表？

Question

我試圖找到一種方法來從Basketball類中獲取self.average變量的所有實例的列表。 然后，我將執行max(list)以獲取最大值。

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

您可以創建一個列表，並將該類的所有實例存儲在其中。 然后，您可以從列表中提取所有平均值並從中獲取最大值。 我將使用這樣的列表理解：

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])