python - 如何打印属于单个数组的 2 个类变量？

Question

我在 Python 中有两个类变量，例如澳大利亚人和美国人，他们有相同的属性，但又是分开的，所以我可以区分两者。我将它们组合成一个数组，根据年龄对它们进行排序。现在我希望如下所示显示它们，但我正在努力寻找一种方法来做到这一点。我对 Python 脚本编写还很陌生，仍在学习中。

class Aus(object):
    def __init__(self, Name, Age, Height):
        self.Name = Name
        self.Age = Age
        self.Height = Height

class US(object):
    def __init__(self, Name, Age, Height):
        self.Name = Name
        self.Age = Age
        self.Height = Height

John = Aus("John", 22, 153)
Steve = Aus("Steve", 15, 180)
Henry = PC("Henry", 20, 192)
Tim = PC("Tim", 85, 160)
Aussies = [John, Steve, Henry, Tim]

Mary = US("Mary", 21, 178)
Sue = US("Sue", 80, 159)
Americans = [Mary, Sue]

Total = Aussies + Americans
Total.sort(key=lambda x: x.Age, reverse=True)

我希望输出是这样的

Tim -> 85 Years/160 cm
Sue -> 80 Years/159 cm
John -> 22 Years/153 cm
Mary -> 21 Years/178 cm

等

有什么办法可以实现吗？

Answer 1

一种方法是定义您自己的 __str__:

请注意，我假设 Henry 和 Tim 也是 Aus:

class Intro(object):
    def __str__(self):
        return "%s -> %s Years/%s cm" % (self.Name, self.Age, self.Height)

class Aus(Intro):
    def __init__(self, Name, Age, Height):
        self.Name = Name
        self.Age = Age
        self.Height = Height

class US(Intro):
    def __init__(self, Name, Age, Height):
        self.Name = Name
        self.Age = Age
        self.Height = Height

John = Aus("John", 22, 153)
Steve = Aus("Steve", 15, 180)
Henry = Aus("Henry", 20, 192)
Tim = Aus("Tim", 85, 160)
Aussies = [John, Steve, Henry, Tim]

Mary = US("Mary", 21, 178)
Sue = US("Sue", 80, 159)
Americans = [Mary, Sue]

Total = Aussies + Americans

然后将 sorted 与 str 一起使用:

[str(s) for s in sorted(Total, key=lambda x:x.Age, reverse=True)]

输出:

['Tim -> 85 Years/160 cm',
 'Sue -> 80 Years/159 cm',
 'John -> 22 Years/153 cm',
 'Mary -> 21 Years/178 cm',
 'Henry -> 20 Years/192 cm',
 'Steve -> 15 Years/180 cm']